Home / 71,957.40-99,331.92-45,115.20

Finding the Fourth Proportional to 71,957.40, 99,331.92 and 45,115.20

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Solution

The fourth proportional to 71,957.40, 99,331.92 and 45,115.20 is: 62,278.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,957.40 : 99,331.92 = 45,115.20 : x
  2. Step 2: Convert to fraction form
    71,957.40/99,331.92 = 45,115.20/x
  3. Step 3: Cross multiply
    71,957.40x = 99,331.92 × 45,115.20
  4. Step 4: Simplify right side
    71,957.40x = 4,481,379,437.18
  5. Step 5: Solve for x
    x = 4,481,379,437.18/71,957.40
  6. Step 6: Final answer
    x = 62,278.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.