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Finding the Fourth Proportional to 40,200, 60,304.32 and 18,023.28

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Solution

The fourth proportional to 40,200, 60,304.32 and 18,023.28 is: 27,036.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,200 : 60,304.32 = 18,023.28 : x
  2. Step 2: Convert to fraction form
    40,200/60,304.32 = 18,023.28/x
  3. Step 3: Cross multiply
    40,200x = 60,304.32 × 18,023.28
  4. Step 4: Simplify right side
    40,200x = 1,086,881,644.57
  5. Step 5: Solve for x
    x = 1,086,881,644.57/40,200
  6. Step 6: Final answer
    x = 27,036.86

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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.