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Finding the Fourth Proportional to 83,363.68, 115,044.78 and 45,638.20

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Solution

The fourth proportional to 83,363.68, 115,044.78 and 45,638.20 is: 62,982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,363.68 : 115,044.78 = 45,638.20 : x
  2. Step 2: Convert to fraction form
    83,363.68/115,044.78 = 45,638.20/x
  3. Step 3: Cross multiply
    83,363.68x = 115,044.78 × 45,638.20
  4. Step 4: Simplify right side
    83,363.68x = 5,250,436,678.60
  5. Step 5: Solve for x
    x = 5,250,436,678.60/83,363.68
  6. Step 6: Final answer
    x = 62,982.30

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1.5x scale

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.