Home / 84,371.72-126,557.60-77,331.96

Finding the Fourth Proportional to 84,371.72, 126,557.60 and 77,331.96

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Solution

The fourth proportional to 84,371.72, 126,557.60 and 77,331.96 is: 115,997.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,371.72 : 126,557.60 = 77,331.96 : x
  2. Step 2: Convert to fraction form
    84,371.72/126,557.60 = 77,331.96/x
  3. Step 3: Cross multiply
    84,371.72x = 126,557.60 × 77,331.96
  4. Step 4: Simplify right side
    84,371.72x = 9,786,947,260.90
  5. Step 5: Solve for x
    x = 9,786,947,260.90/84,371.72
  6. Step 6: Final answer
    x = 115,997.96

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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.