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Finding the Fourth Proportional to 42,517.68, 63,776.64 and 14,815.68

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Solution

The fourth proportional to 42,517.68, 63,776.64 and 14,815.68 is: 22,223.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,517.68 : 63,776.64 = 14,815.68 : x
  2. Step 2: Convert to fraction form
    42,517.68/63,776.64 = 14,815.68/x
  3. Step 3: Cross multiply
    42,517.68x = 63,776.64 × 14,815.68
  4. Step 4: Simplify right side
    42,517.68x = 944,894,289.72
  5. Step 5: Solve for x
    x = 944,894,289.72/42,517.68
  6. Step 6: Final answer
    x = 22,223.56

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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.