Home / 78,942.46-108,939.31-43,131.70

Finding the Fourth Proportional to 78,942.46, 108,939.31 and 43,131.70

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Solution

The fourth proportional to 78,942.46, 108,939.31 and 43,131.70 is: 59,521.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,942.46 : 108,939.31 = 43,131.70 : x
  2. Step 2: Convert to fraction form
    78,942.46/108,939.31 = 43,131.70/x
  3. Step 3: Cross multiply
    78,942.46x = 108,939.31 × 43,131.70
  4. Step 4: Simplify right side
    78,942.46x = 4,698,737,637.13
  5. Step 5: Solve for x
    x = 4,698,737,637.13/78,942.46
  6. Step 6: Final answer
    x = 59,521.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.