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Finding the Fourth Proportional to 83,816.80, 125,725.20 and 48,387.40

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Solution

The fourth proportional to 83,816.80, 125,725.20 and 48,387.40 is: 72,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,816.80 : 125,725.20 = 48,387.40 : x
  2. Step 2: Convert to fraction form
    83,816.80/125,725.20 = 48,387.40/x
  3. Step 3: Cross multiply
    83,816.80x = 125,725.20 × 48,387.40
  4. Step 4: Simplify right side
    83,816.80x = 6,083,515,542.48
  5. Step 5: Solve for x
    x = 6,083,515,542.48/83,816.80
  6. Step 6: Final answer
    x = 72,581.10

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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.