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Finding the Fourth Proportional to 83,575.78, 125,363.92 and 21,246.28

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Solution

The fourth proportional to 83,575.78, 125,363.92 and 21,246.28 is: 31,869.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,575.78 : 125,363.92 = 21,246.28 : x
  2. Step 2: Convert to fraction form
    83,575.78/125,363.92 = 21,246.28/x
  3. Step 3: Cross multiply
    83,575.78x = 125,363.92 × 21,246.28
  4. Step 4: Simplify right side
    83,575.78x = 2,663,516,946.22
  5. Step 5: Solve for x
    x = 2,663,516,946.22/83,575.78
  6. Step 6: Final answer
    x = 31,869.48

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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.