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Finding the Fourth Proportional to 40,372, 55,713.36 and 22,708

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Solution

The fourth proportional to 40,372, 55,713.36 and 22,708 is: 31,337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,372 : 55,713.36 = 22,708 : x
  2. Step 2: Convert to fraction form
    40,372/55,713.36 = 22,708/x
  3. Step 3: Cross multiply
    40,372x = 55,713.36 × 22,708
  4. Step 4: Simplify right side
    40,372x = 1,265,138,978.88
  5. Step 5: Solve for x
    x = 1,265,138,978.88/40,372
  6. Step 6: Final answer
    x = 31,337.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.