Home / 40,981.80-61,472.70-28,515.90

Finding the Fourth Proportional to 40,981.80, 61,472.70 and 28,515.90

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Solution

The fourth proportional to 40,981.80, 61,472.70 and 28,515.90 is: 42,773.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,981.80 : 61,472.70 = 28,515.90 : x
  2. Step 2: Convert to fraction form
    40,981.80/61,472.70 = 28,515.90/x
  3. Step 3: Cross multiply
    40,981.80x = 61,472.70 × 28,515.90
  4. Step 4: Simplify right side
    40,981.80x = 1,752,949,365.93
  5. Step 5: Solve for x
    x = 1,752,949,365.93/40,981.80
  6. Step 6: Final answer
    x = 42,773.85

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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.