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Finding the Fourth Proportional to 63,909.40, 95,864.10 and 57,688.60

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Solution

The fourth proportional to 63,909.40, 95,864.10 and 57,688.60 is: 86,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,909.40 : 95,864.10 = 57,688.60 : x
  2. Step 2: Convert to fraction form
    63,909.40/95,864.10 = 57,688.60/x
  3. Step 3: Cross multiply
    63,909.40x = 95,864.10 × 57,688.60
  4. Step 4: Simplify right side
    63,909.40x = 5,530,265,719.26
  5. Step 5: Solve for x
    x = 5,530,265,719.26/63,909.40
  6. Step 6: Final answer
    x = 86,532.90

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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.