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Finding the Fourth Proportional to 78,999.91, 118,475.76 and 41,539.66

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Solution

The fourth proportional to 78,999.91, 118,475.76 and 41,539.66 is: 62,296.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,999.91 : 118,475.76 = 41,539.66 : x
  2. Step 2: Convert to fraction form
    78,999.91/118,475.76 = 41,539.66/x
  3. Step 3: Cross multiply
    78,999.91x = 118,475.76 × 41,539.66
  4. Step 4: Simplify right side
    78,999.91x = 4,921,442,648.23
  5. Step 5: Solve for x
    x = 4,921,442,648.23/78,999.91
  6. Step 6: Final answer
    x = 62,296.82

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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.