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Finding the Fourth Proportional to 83,290.88, 124,977.36 and 38,920.70

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Solution

The fourth proportional to 83,290.88, 124,977.36 and 38,920.70 is: 58,400.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,290.88 : 124,977.36 = 38,920.70 : x
  2. Step 2: Convert to fraction form
    83,290.88/124,977.36 = 38,920.70/x
  3. Step 3: Cross multiply
    83,290.88x = 124,977.36 × 38,920.70
  4. Step 4: Simplify right side
    83,290.88x = 4,864,206,335.35
  5. Step 5: Solve for x
    x = 4,864,206,335.35/83,290.88
  6. Step 6: Final answer
    x = 58,400.23

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1.5x scale

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.