Home / 76,691.26-115,035.45-54,109.18

Finding the Fourth Proportional to 76,691.26, 115,035.45 and 54,109.18

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Solution

The fourth proportional to 76,691.26, 115,035.45 and 54,109.18 is: 81,162.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,691.26 : 115,035.45 = 54,109.18 : x
  2. Step 2: Convert to fraction form
    76,691.26/115,035.45 = 54,109.18/x
  3. Step 3: Cross multiply
    76,691.26x = 115,035.45 × 54,109.18
  4. Step 4: Simplify right side
    76,691.26x = 6,224,473,870.43
  5. Step 5: Solve for x
    x = 6,224,473,870.43/76,691.26
  6. Step 6: Final answer
    x = 81,162.75

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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.