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Finding the Fourth Proportional to 67,918.60, 101,954.70 and 40,232.20

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Solution

The fourth proportional to 67,918.60, 101,954.70 and 40,232.20 is: 60,393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,918.60 : 101,954.70 = 40,232.20 : x
  2. Step 2: Convert to fraction form
    67,918.60/101,954.70 = 40,232.20/x
  3. Step 3: Cross multiply
    67,918.60x = 101,954.70 × 40,232.20
  4. Step 4: Simplify right side
    67,918.60x = 4,101,861,881.34
  5. Step 5: Solve for x
    x = 4,101,861,881.34/67,918.60
  6. Step 6: Final answer
    x = 60,393.79

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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.