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Finding the Fourth Proportional to 80,701.92, 121,051.84 and 36,297.28

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Solution

The fourth proportional to 80,701.92, 121,051.84 and 36,297.28 is: 54,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,701.92 : 121,051.84 = 36,297.28 : x
  2. Step 2: Convert to fraction form
    80,701.92/121,051.84 = 36,297.28/x
  3. Step 3: Cross multiply
    80,701.92x = 121,051.84 × 36,297.28
  4. Step 4: Simplify right side
    80,701.92x = 4,393,852,531.00
  5. Step 5: Solve for x
    x = 4,393,852,531.00/80,701.92
  6. Step 6: Final answer
    x = 54,445.45

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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.