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Finding the Fourth Proportional to 99,763.73, 137,668.43 and 56,737.41

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Solution

The fourth proportional to 99,763.73, 137,668.43 and 56,737.41 is: 78,294.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,763.73 : 137,668.43 = 56,737.41 : x
  2. Step 2: Convert to fraction form
    99,763.73/137,668.43 = 56,737.41/x
  3. Step 3: Cross multiply
    99,763.73x = 137,668.43 × 56,737.41
  4. Step 4: Simplify right side
    99,763.73x = 7,810,949,873.28
  5. Step 5: Solve for x
    x = 7,810,949,873.28/99,763.73
  6. Step 6: Final answer
    x = 78,294.49

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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.