Home / 99,728.92-137,625.90-57,287.44

Finding the Fourth Proportional to 99,728.92, 137,625.90 and 57,287.44

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Solution

The fourth proportional to 99,728.92, 137,625.90 and 57,287.44 is: 79,056.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,728.92 : 137,625.90 = 57,287.44 : x
  2. Step 2: Convert to fraction form
    99,728.92/137,625.90 = 57,287.44/x
  3. Step 3: Cross multiply
    99,728.92x = 137,625.90 × 57,287.44
  4. Step 4: Simplify right side
    99,728.92x = 7,884,235,488.70
  5. Step 5: Solve for x
    x = 7,884,235,488.70/99,728.92
  6. Step 6: Final answer
    x = 79,056.66

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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.