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Finding the Fourth Proportional to 89,649.60, 134,474.40 and 82,891.20

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Solution

The fourth proportional to 89,649.60, 134,474.40 and 82,891.20 is: 124,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,649.60 : 134,474.40 = 82,891.20 : x
  2. Step 2: Convert to fraction form
    89,649.60/134,474.40 = 82,891.20/x
  3. Step 3: Cross multiply
    89,649.60x = 134,474.40 × 82,891.20
  4. Step 4: Simplify right side
    89,649.60x = 11,146,744,385.28
  5. Step 5: Solve for x
    x = 11,146,744,385.28/89,649.60
  6. Step 6: Final answer
    x = 124,336.80

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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.