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Finding the Fourth Proportional to 83,920.88, 125,881.29 and 31,334.46

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Solution

The fourth proportional to 83,920.88, 125,881.29 and 31,334.46 is: 47,001.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,920.88 : 125,881.29 = 31,334.46 : x
  2. Step 2: Convert to fraction form
    83,920.88/125,881.29 = 31,334.46/x
  3. Step 3: Cross multiply
    83,920.88x = 125,881.29 × 31,334.46
  4. Step 4: Simplify right side
    83,920.88x = 3,944,422,246.25
  5. Step 5: Solve for x
    x = 3,944,422,246.25/83,920.88
  6. Step 6: Final answer
    x = 47,001.68

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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.