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Finding the Fourth Proportional to 84,553.60, 126,862.80 and 83,225.20

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Solution

The fourth proportional to 84,553.60, 126,862.80 and 83,225.20 is: 124,869.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,553.60 : 126,862.80 = 83,225.20 : x
  2. Step 2: Convert to fraction form
    84,553.60/126,862.80 = 83,225.20/x
  3. Step 3: Cross multiply
    84,553.60x = 126,862.80 × 83,225.20
  4. Step 4: Simplify right side
    84,553.60x = 10,558,181,902.56
  5. Step 5: Solve for x
    x = 10,558,181,902.56/84,553.60
  6. Step 6: Final answer
    x = 124,869.69

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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.