Planteamiento:
a/b + b/c +c/d = k
a + d = 27
Series de razones continuas equivalentes:
Se cumple:
a =bk = dk⁴
b = ck = dk³
c = dk = dk²
d = k
Entonces:
dk³/dk² = dk²/ dk = dk/d = k
a + d = 27
dk³ +d=27
d ( k³+ 1 ) = 27
K =2
d(2³ +1) 27
d = 27/9
d = 3
a = 24
c = d*k
c = 3*2 =6
b = d k²
b = 3 *4 = 12
a+b+c+d = 24 +12 + 6 + 3 = 45
