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Finding the Fourth Proportional to 73,117.80, 109,676.70 and 66,338.10

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Solution

The fourth proportional to 73,117.80, 109,676.70 and 66,338.10 is: 99,507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,117.80 : 109,676.70 = 66,338.10 : x
  2. Step 2: Convert to fraction form
    73,117.80/109,676.70 = 66,338.10/x
  3. Step 3: Cross multiply
    73,117.80x = 109,676.70 × 66,338.10
  4. Step 4: Simplify right side
    73,117.80x = 7,275,743,892.27
  5. Step 5: Solve for x
    x = 7,275,743,892.27/73,117.80
  6. Step 6: Final answer
    x = 99,507.15

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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.