Home / 78,680.19-118,042.19-34,310.85

Finding the Fourth Proportional to 78,680.19, 118,042.19 and 34,310.85

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Solution

The fourth proportional to 78,680.19, 118,042.19 and 34,310.85 is: 51,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.19 : 118,042.19 = 34,310.85 : x
  2. Step 2: Convert to fraction form
    78,680.19/118,042.19 = 34,310.85/x
  3. Step 3: Cross multiply
    78,680.19x = 118,042.19 × 34,310.85
  4. Step 4: Simplify right side
    78,680.19x = 4,050,127,703.21
  5. Step 5: Solve for x
    x = 4,050,127,703.21/78,680.19
  6. Step 6: Final answer
    x = 51,475.83

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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.