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Finding the Fourth Proportional to 71,400.54, 106,901.13 and 53,815.26

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Solution

The fourth proportional to 71,400.54, 106,901.13 and 53,815.26 is: 80,572.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,400.54 : 106,901.13 = 53,815.26 : x
  2. Step 2: Convert to fraction form
    71,400.54/106,901.13 = 53,815.26/x
  3. Step 3: Cross multiply
    71,400.54x = 106,901.13 × 53,815.26
  4. Step 4: Simplify right side
    71,400.54x = 5,752,912,105.24
  5. Step 5: Solve for x
    x = 5,752,912,105.24/71,400.54
  6. Step 6: Final answer
    x = 80,572.39

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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.