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Finding the Fourth Proportional to 71,572.05, 107,411.40 and 27,285.30

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Solution

The fourth proportional to 71,572.05, 107,411.40 and 27,285.30 is: 40,948.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,572.05 : 107,411.40 = 27,285.30 : x
  2. Step 2: Convert to fraction form
    71,572.05/107,411.40 = 27,285.30/x
  3. Step 3: Cross multiply
    71,572.05x = 107,411.40 × 27,285.30
  4. Step 4: Simplify right side
    71,572.05x = 2,930,752,272.42
  5. Step 5: Solve for x
    x = 2,930,752,272.42/71,572.05
  6. Step 6: Final answer
    x = 40,948.28

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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.