Home / 55,543.20-83,185.20-54,429.60

Finding the Fourth Proportional to 55,543.20, 83,185.20 and 54,429.60

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Solution

The fourth proportional to 55,543.20, 83,185.20 and 54,429.60 is: 81,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,543.20 : 83,185.20 = 54,429.60 : x
  2. Step 2: Convert to fraction form
    55,543.20/83,185.20 = 54,429.60/x
  3. Step 3: Cross multiply
    55,543.20x = 83,185.20 × 54,429.60
  4. Step 4: Simplify right side
    55,543.20x = 4,527,737,161.92
  5. Step 5: Solve for x
    x = 4,527,737,161.92/55,543.20
  6. Step 6: Final answer
    x = 81,517.40

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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.