Home / 83,445.08-115,169.33-53,239.78

Finding the Fourth Proportional to 83,445.08, 115,169.33 and 53,239.78

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Solution

The fourth proportional to 83,445.08, 115,169.33 and 53,239.78 is: 73,480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,445.08 : 115,169.33 = 53,239.78 : x
  2. Step 2: Convert to fraction form
    83,445.08/115,169.33 = 53,239.78/x
  3. Step 3: Cross multiply
    83,445.08x = 115,169.33 × 53,239.78
  4. Step 4: Simplify right side
    83,445.08x = 6,131,588,949.90
  5. Step 5: Solve for x
    x = 6,131,588,949.90/83,445.08
  6. Step 6: Final answer
    x = 73,480.53

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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.