Home / 78,344.26-108,115.31-42,534.43

Finding the Fourth Proportional to 78,344.26, 108,115.31 and 42,534.43

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Solution

The fourth proportional to 78,344.26, 108,115.31 and 42,534.43 is: 58,697.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,344.26 : 108,115.31 = 42,534.43 : x
  2. Step 2: Convert to fraction form
    78,344.26/108,115.31 = 42,534.43/x
  3. Step 3: Cross multiply
    78,344.26x = 108,115.31 × 42,534.43
  4. Step 4: Simplify right side
    78,344.26x = 4,598,623,085.12
  5. Step 5: Solve for x
    x = 4,598,623,085.12/78,344.26
  6. Step 6: Final answer
    x = 58,697.64

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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.