Home / 78,939.91-108,938.64-43,132.14

Finding the Fourth Proportional to 78,939.91, 108,938.64 and 43,132.14

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Solution

The fourth proportional to 78,939.91, 108,938.64 and 43,132.14 is: 59,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939.91 : 108,938.64 = 43,132.14 : x
  2. Step 2: Convert to fraction form
    78,939.91/108,938.64 = 43,132.14/x
  3. Step 3: Cross multiply
    78,939.91x = 108,938.64 × 43,132.14
  4. Step 4: Simplify right side
    78,939.91x = 4,698,755,911.54
  5. Step 5: Solve for x
    x = 4,698,755,911.54/78,939.91
  6. Step 6: Final answer
    x = 59,523.20

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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.