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Finding the Fourth Proportional to 92,375.47, 138,563.53 and 25,815.21

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Solution

The fourth proportional to 92,375.47, 138,563.53 and 25,815.21 is: 38,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,375.47 : 138,563.53 = 25,815.21 : x
  2. Step 2: Convert to fraction form
    92,375.47/138,563.53 = 25,815.21/x
  3. Step 3: Cross multiply
    92,375.47x = 138,563.53 × 25,815.21
  4. Step 4: Simplify right side
    92,375.47x = 3,577,046,041.14
  5. Step 5: Solve for x
    x = 3,577,046,041.14/92,375.47
  6. Step 6: Final answer
    x = 38,722.90

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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.