Home / 83,109.27-124,663.91-20,779.77

Finding the Fourth Proportional to 83,109.27, 124,663.91 and 20,779.77

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Solution

The fourth proportional to 83,109.27, 124,663.91 and 20,779.77 is: 31,169.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,109.27 : 124,663.91 = 20,779.77 : x
  2. Step 2: Convert to fraction form
    83,109.27/124,663.91 = 20,779.77/x
  3. Step 3: Cross multiply
    83,109.27x = 124,663.91 × 20,779.77
  4. Step 4: Simplify right side
    83,109.27x = 2,590,487,377.10
  5. Step 5: Solve for x
    x = 2,590,487,377.10/83,109.27
  6. Step 6: Final answer
    x = 31,169.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.