Home / 76,818.38-115,148.34-29,420.54

Finding the Fourth Proportional to 76,818.38, 115,148.34 and 29,420.54

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Solution

The fourth proportional to 76,818.38, 115,148.34 and 29,420.54 is: 44,100.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,818.38 : 115,148.34 = 29,420.54 : x
  2. Step 2: Convert to fraction form
    76,818.38/115,148.34 = 29,420.54/x
  3. Step 3: Cross multiply
    76,818.38x = 115,148.34 × 29,420.54
  4. Step 4: Simplify right side
    76,818.38x = 3,387,726,342.90
  5. Step 5: Solve for x
    x = 3,387,726,342.90/76,818.38
  6. Step 6: Final answer
    x = 44,100.47

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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.