Home / 78,920.73-118,387.17-26,330.13

Finding the Fourth Proportional to 78,920.73, 118,387.17 and 26,330.13

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Solution

The fourth proportional to 78,920.73, 118,387.17 and 26,330.13 is: 39,497.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,920.73 : 118,387.17 = 26,330.13 : x
  2. Step 2: Convert to fraction form
    78,920.73/118,387.17 = 26,330.13/x
  3. Step 3: Cross multiply
    78,920.73x = 118,387.17 × 26,330.13
  4. Step 4: Simplify right side
    78,920.73x = 3,117,149,576.43
  5. Step 5: Solve for x
    x = 3,117,149,576.43/78,920.73
  6. Step 6: Final answer
    x = 39,497.22

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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.