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Finding the Fourth Proportional to 80,893.56, 111,641.48 and 48,638.76

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Solution

The fourth proportional to 80,893.56, 111,641.48 and 48,638.76 is: 67,126.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,893.56 : 111,641.48 = 48,638.76 : x
  2. Step 2: Convert to fraction form
    80,893.56/111,641.48 = 48,638.76/x
  3. Step 3: Cross multiply
    80,893.56x = 111,641.48 × 48,638.76
  4. Step 4: Simplify right side
    80,893.56x = 5,430,103,151.76
  5. Step 5: Solve for x
    x = 5,430,103,151.76/80,893.56
  6. Step 6: Final answer
    x = 67,126.52

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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.