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Finding the Fourth Proportional to 84,557.60, 126,868.80 and 83,229.20

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Solution

The fourth proportional to 84,557.60, 126,868.80 and 83,229.20 is: 124,875.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,557.60 : 126,868.80 = 83,229.20 : x
  2. Step 2: Convert to fraction form
    84,557.60/126,868.80 = 83,229.20/x
  3. Step 3: Cross multiply
    84,557.60x = 126,868.80 × 83,229.20
  4. Step 4: Simplify right side
    84,557.60x = 10,559,188,728.96
  5. Step 5: Solve for x
    x = 10,559,188,728.96/84,557.60
  6. Step 6: Final answer
    x = 124,875.69

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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.