Home / 87,279.47-120,438.27-49,036.02

Finding the Fourth Proportional to 87,279.47, 120,438.27 and 49,036.02

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Solution

The fourth proportional to 87,279.47, 120,438.27 and 49,036.02 is: 67,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,279.47 : 120,438.27 = 49,036.02 : x
  2. Step 2: Convert to fraction form
    87,279.47/120,438.27 = 49,036.02/x
  3. Step 3: Cross multiply
    87,279.47x = 120,438.27 × 49,036.02
  4. Step 4: Simplify right side
    87,279.47x = 5,905,813,416.49
  5. Step 5: Solve for x
    x = 5,905,813,416.49/87,279.47
  6. Step 6: Final answer
    x = 67,665.55

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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.