Home / 99,910.49-137,874.87-54,587.50

Finding the Fourth Proportional to 99,910.49, 137,874.87 and 54,587.50

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Solution

The fourth proportional to 99,910.49, 137,874.87 and 54,587.50 is: 75,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,910.49 : 137,874.87 = 54,587.50 : x
  2. Step 2: Convert to fraction form
    99,910.49/137,874.87 = 54,587.50/x
  3. Step 3: Cross multiply
    99,910.49x = 137,874.87 × 54,587.50
  4. Step 4: Simplify right side
    99,910.49x = 7,526,244,466.13
  5. Step 5: Solve for x
    x = 7,526,244,466.13/99,910.49
  6. Step 6: Final answer
    x = 75,329.87

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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.