Home / 78,942.68-108,939.62-43,131.92

Finding the Fourth Proportional to 78,942.68, 108,939.62 and 43,131.92

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Solution

The fourth proportional to 78,942.68, 108,939.62 and 43,131.92 is: 59,521.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,942.68 : 108,939.62 = 43,131.92 : x
  2. Step 2: Convert to fraction form
    78,942.68/108,939.62 = 43,131.92/x
  3. Step 3: Cross multiply
    78,942.68x = 108,939.62 × 43,131.92
  4. Step 4: Simplify right side
    78,942.68x = 4,698,774,214.31
  5. Step 5: Solve for x
    x = 4,698,774,214.31/78,942.68
  6. Step 6: Final answer
    x = 59,521.35

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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.