Home / 90,637.60-135,956.40-28,308.10

Finding the Fourth Proportional to 90,637.60, 135,956.40 and 28,308.10

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Solution

The fourth proportional to 90,637.60, 135,956.40 and 28,308.10 is: 42,462.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,637.60 : 135,956.40 = 28,308.10 : x
  2. Step 2: Convert to fraction form
    90,637.60/135,956.40 = 28,308.10/x
  3. Step 3: Cross multiply
    90,637.60x = 135,956.40 × 28,308.10
  4. Step 4: Simplify right side
    90,637.60x = 3,848,667,366.84
  5. Step 5: Solve for x
    x = 3,848,667,366.84/90,637.60
  6. Step 6: Final answer
    x = 42,462.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.