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Finding the Fourth Proportional to 83,108.96, 124,663.44 and 20,779.44

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Solution

The fourth proportional to 83,108.96, 124,663.44 and 20,779.44 is: 31,169.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,108.96 : 124,663.44 = 20,779.44 : x
  2. Step 2: Convert to fraction form
    83,108.96/124,663.44 = 20,779.44/x
  3. Step 3: Cross multiply
    83,108.96x = 124,663.44 × 20,779.44
  4. Step 4: Simplify right side
    83,108.96x = 2,590,436,471.67
  5. Step 5: Solve for x
    x = 2,590,436,471.67/83,108.96
  6. Step 6: Final answer
    x = 31,169.16

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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.