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Finding the Fourth Proportional to 83,779.92, 115,610.22 and 49,786.92

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Solution

The fourth proportional to 83,779.92, 115,610.22 and 49,786.92 is: 68,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,779.92 : 115,610.22 = 49,786.92 : x
  2. Step 2: Convert to fraction form
    83,779.92/115,610.22 = 49,786.92/x
  3. Step 3: Cross multiply
    83,779.92x = 115,610.22 × 49,786.92
  4. Step 4: Simplify right side
    83,779.92x = 5,755,876,774.32
  5. Step 5: Solve for x
    x = 5,755,876,774.32/83,779.92
  6. Step 6: Final answer
    x = 68,702.34

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1.5x scale

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.