Home / 78,939.20-108,937.67-43,131.43

Finding the Fourth Proportional to 78,939.20, 108,937.67 and 43,131.43

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Solution

The fourth proportional to 78,939.20, 108,937.67 and 43,131.43 is: 59,522.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939.20 : 108,937.67 = 43,131.43 : x
  2. Step 2: Convert to fraction form
    78,939.20/108,937.67 = 43,131.43/x
  3. Step 3: Cross multiply
    78,939.20x = 108,937.67 × 43,131.43
  4. Step 4: Simplify right side
    78,939.20x = 4,698,637,272.31
  5. Step 5: Solve for x
    x = 4,698,637,272.31/78,939.20
  6. Step 6: Final answer
    x = 59,522.23

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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.