Home / 78,812.31-118,176.72-34,387.17

Finding the Fourth Proportional to 78,812.31, 118,176.72 and 34,387.17

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Solution

The fourth proportional to 78,812.31, 118,176.72 and 34,387.17 is: 51,562.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,812.31 : 118,176.72 = 34,387.17 : x
  2. Step 2: Convert to fraction form
    78,812.31/118,176.72 = 34,387.17/x
  3. Step 3: Cross multiply
    78,812.31x = 118,176.72 × 34,387.17
  4. Step 4: Simplify right side
    78,812.31x = 4,063,762,960.68
  5. Step 5: Solve for x
    x = 4,063,762,960.68/78,812.31
  6. Step 6: Final answer
    x = 51,562.54

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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.