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Finding the Fourth Proportional to 90,655.20, 135,962.30 and 34,475.30

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Solution

The fourth proportional to 90,655.20, 135,962.30 and 34,475.30 is: 51,705.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,655.20 : 135,962.30 = 34,475.30 : x
  2. Step 2: Convert to fraction form
    90,655.20/135,962.30 = 34,475.30/x
  3. Step 3: Cross multiply
    90,655.20x = 135,962.30 × 34,475.30
  4. Step 4: Simplify right side
    90,655.20x = 4,687,340,229.00
  5. Step 5: Solve for x
    x = 4,687,340,229.00/90,655.20
  6. Step 6: Final answer
    x = 51,705.14

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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.