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Finding the Fourth Proportional to 89,998.70, 135,082.79 and 45,657.27

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Solution

The fourth proportional to 89,998.70, 135,082.79 and 45,657.27 is: 68,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,998.70 : 135,082.79 = 45,657.27 : x
  2. Step 2: Convert to fraction form
    89,998.70/135,082.79 = 45,657.27/x
  3. Step 3: Cross multiply
    89,998.70x = 135,082.79 × 45,657.27
  4. Step 4: Simplify right side
    89,998.70x = 6,167,511,358.31
  5. Step 5: Solve for x
    x = 6,167,511,358.31/89,998.70
  6. Step 6: Final answer
    x = 68,528.90

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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.