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Finding the Fourth Proportional to 55,104.80, 82,657.20 and 13,551.80

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Solution

The fourth proportional to 55,104.80, 82,657.20 and 13,551.80 is: 20,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,104.80 : 82,657.20 = 13,551.80 : x
  2. Step 2: Convert to fraction form
    55,104.80/82,657.20 = 13,551.80/x
  3. Step 3: Cross multiply
    55,104.80x = 82,657.20 × 13,551.80
  4. Step 4: Simplify right side
    55,104.80x = 1,120,153,842.96
  5. Step 5: Solve for x
    x = 1,120,153,842.96/55,104.80
  6. Step 6: Final answer
    x = 20,327.70

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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.