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Finding the Fourth Proportional to 83,117.80, 124,539.90 and 47,996.20

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Solution

The fourth proportional to 83,117.80, 124,539.90 and 47,996.20 is: 71,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,117.80 : 124,539.90 = 47,996.20 : x
  2. Step 2: Convert to fraction form
    83,117.80/124,539.90 = 47,996.20/x
  3. Step 3: Cross multiply
    83,117.80x = 124,539.90 × 47,996.20
  4. Step 4: Simplify right side
    83,117.80x = 5,977,441,948.38
  5. Step 5: Solve for x
    x = 5,977,441,948.38/83,117.80
  6. Step 6: Final answer
    x = 71,915.31

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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.