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Finding the Fourth Proportional to 67,895.60, 101,920.20 and 40,209.20

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Solution

The fourth proportional to 67,895.60, 101,920.20 and 40,209.20 is: 60,359.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,895.60 : 101,920.20 = 40,209.20 : x
  2. Step 2: Convert to fraction form
    67,895.60/101,920.20 = 40,209.20/x
  3. Step 3: Cross multiply
    67,895.60x = 101,920.20 × 40,209.20
  4. Step 4: Simplify right side
    67,895.60x = 4,098,129,705.84
  5. Step 5: Solve for x
    x = 4,098,129,705.84/67,895.60
  6. Step 6: Final answer
    x = 60,359.28

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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.