Home / 55,177.20-82,938.60-54,140.40

Finding the Fourth Proportional to 55,177.20, 82,938.60 and 54,140.40

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Solution

The fourth proportional to 55,177.20, 82,938.60 and 54,140.40 is: 81,380.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,177.20 : 82,938.60 = 54,140.40 : x
  2. Step 2: Convert to fraction form
    55,177.20/82,938.60 = 54,140.40/x
  3. Step 3: Cross multiply
    55,177.20x = 82,938.60 × 54,140.40
  4. Step 4: Simplify right side
    55,177.20x = 4,490,328,979.44
  5. Step 5: Solve for x
    x = 4,490,328,979.44/55,177.20
  6. Step 6: Final answer
    x = 81,380.15

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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.