Home / 78,943.88-108,939.14-43,132.20

Finding the Fourth Proportional to 78,943.88, 108,939.14 and 43,132.20

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Solution

The fourth proportional to 78,943.88, 108,939.14 and 43,132.20 is: 59,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,943.88 : 108,939.14 = 43,132.20 : x
  2. Step 2: Convert to fraction form
    78,943.88/108,939.14 = 43,132.20/x
  3. Step 3: Cross multiply
    78,943.88x = 108,939.14 × 43,132.20
  4. Step 4: Simplify right side
    78,943.88x = 4,698,784,774.31
  5. Step 5: Solve for x
    x = 4,698,784,774.31/78,943.88
  6. Step 6: Final answer
    x = 59,520.57

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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.