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Finding the Fourth Proportional to 80,239.61, 110,734.46 and 48,407.82

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Solution

The fourth proportional to 80,239.61, 110,734.46 and 48,407.82 is: 66,805.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,239.61 : 110,734.46 = 48,407.82 : x
  2. Step 2: Convert to fraction form
    80,239.61/110,734.46 = 48,407.82/x
  3. Step 3: Cross multiply
    80,239.61x = 110,734.46 × 48,407.82
  4. Step 4: Simplify right side
    80,239.61x = 5,360,413,565.44
  5. Step 5: Solve for x
    x = 5,360,413,565.44/80,239.61
  6. Step 6: Final answer
    x = 66,805.08

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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.