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Finding the Fourth Proportional to 73,119.60, 109,679.40 and 67,417.20

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Solution

The fourth proportional to 73,119.60, 109,679.40 and 67,417.20 is: 101,125.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,119.60 : 109,679.40 = 67,417.20 : x
  2. Step 2: Convert to fraction form
    73,119.60/109,679.40 = 67,417.20/x
  3. Step 3: Cross multiply
    73,119.60x = 109,679.40 × 67,417.20
  4. Step 4: Simplify right side
    73,119.60x = 7,394,278,045.68
  5. Step 5: Solve for x
    x = 7,394,278,045.68/73,119.60
  6. Step 6: Final answer
    x = 101,125.80

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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.