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Finding the Fourth Proportional to 40,286.80, 60,430.20 and 34,325.20

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Solution

The fourth proportional to 40,286.80, 60,430.20 and 34,325.20 is: 51,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,286.80 : 60,430.20 = 34,325.20 : x
  2. Step 2: Convert to fraction form
    40,286.80/60,430.20 = 34,325.20/x
  3. Step 3: Cross multiply
    40,286.80x = 60,430.20 × 34,325.20
  4. Step 4: Simplify right side
    40,286.80x = 2,074,278,701.04
  5. Step 5: Solve for x
    x = 2,074,278,701.04/40,286.80
  6. Step 6: Final answer
    x = 51,487.80

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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.