Home / 87,728.56-121,063.90-49,488.19

Finding the Fourth Proportional to 87,728.56, 121,063.90 and 49,488.19

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Solution

The fourth proportional to 87,728.56, 121,063.90 and 49,488.19 is: 68,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,728.56 : 121,063.90 = 49,488.19 : x
  2. Step 2: Convert to fraction form
    87,728.56/121,063.90 = 49,488.19/x
  3. Step 3: Cross multiply
    87,728.56x = 121,063.90 × 49,488.19
  4. Step 4: Simplify right side
    87,728.56x = 5,991,233,285.34
  5. Step 5: Solve for x
    x = 5,991,233,285.34/87,728.56
  6. Step 6: Final answer
    x = 68,292.85

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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.