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Finding the Fourth Proportional to 83,710.80, 125,632.08 and 73,869.84

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Solution

The fourth proportional to 83,710.80, 125,632.08 and 73,869.84 is: 110,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,710.80 : 125,632.08 = 73,869.84 : x
  2. Step 2: Convert to fraction form
    83,710.80/125,632.08 = 73,869.84/x
  3. Step 3: Cross multiply
    83,710.80x = 125,632.08 × 73,869.84
  4. Step 4: Simplify right side
    83,710.80x = 9,280,421,648.47
  5. Step 5: Solve for x
    x = 9,280,421,648.47/83,710.80
  6. Step 6: Final answer
    x = 110,862.90

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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.