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Finding the Fourth Proportional to 91,562.63, 137,967.84 and 75,287.25

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Solution

The fourth proportional to 91,562.63, 137,967.84 and 75,287.25 is: 113,443.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,562.63 : 137,967.84 = 75,287.25 : x
  2. Step 2: Convert to fraction form
    91,562.63/137,967.84 = 75,287.25/x
  3. Step 3: Cross multiply
    91,562.63x = 137,967.84 × 75,287.25
  4. Step 4: Simplify right side
    91,562.63x = 10,387,219,262.04
  5. Step 5: Solve for x
    x = 10,387,219,262.04/91,562.63
  6. Step 6: Final answer
    x = 113,443.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.