Home / 87,939-121,377.96-50,235.12

Finding the Fourth Proportional to 87,939, 121,377.96 and 50,235.12

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Solution

The fourth proportional to 87,939, 121,377.96 and 50,235.12 is: 69,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,939 : 121,377.96 = 50,235.12 : x
  2. Step 2: Convert to fraction form
    87,939/121,377.96 = 50,235.12/x
  3. Step 3: Cross multiply
    87,939x = 121,377.96 × 50,235.12
  4. Step 4: Simplify right side
    87,939x = 6,097,436,385.96
  5. Step 5: Solve for x
    x = 6,097,436,385.96/87,939
  6. Step 6: Final answer
    x = 69,337.11

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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.