Home / 87,780.28-121,138.88-50,058.04

Finding the Fourth Proportional to 87,780.28, 121,138.88 and 50,058.04

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Solution

The fourth proportional to 87,780.28, 121,138.88 and 50,058.04 is: 69,081.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,780.28 : 121,138.88 = 50,058.04 : x
  2. Step 2: Convert to fraction form
    87,780.28/121,138.88 = 50,058.04/x
  3. Step 3: Cross multiply
    87,780.28x = 121,138.88 × 50,058.04
  4. Step 4: Simplify right side
    87,780.28x = 6,063,974,900.60
  5. Step 5: Solve for x
    x = 6,063,974,900.60/87,780.28
  6. Step 6: Final answer
    x = 69,081.29

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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.