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Finding the Fourth Proportional to 89,123.60, 133,685.40 and 29,961.20

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Solution

The fourth proportional to 89,123.60, 133,685.40 and 29,961.20 is: 44,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,123.60 : 133,685.40 = 29,961.20 : x
  2. Step 2: Convert to fraction form
    89,123.60/133,685.40 = 29,961.20/x
  3. Step 3: Cross multiply
    89,123.60x = 133,685.40 × 29,961.20
  4. Step 4: Simplify right side
    89,123.60x = 4,005,375,006.48
  5. Step 5: Solve for x
    x = 4,005,375,006.48/89,123.60
  6. Step 6: Final answer
    x = 44,941.80

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1.5x scale

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.