Home / 54,288.20-81,605.10-51,177.80

Finding the Fourth Proportional to 54,288.20, 81,605.10 and 51,177.80

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Solution

The fourth proportional to 54,288.20, 81,605.10 and 51,177.80 is: 76,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288.20 : 81,605.10 = 51,177.80 : x
  2. Step 2: Convert to fraction form
    54,288.20/81,605.10 = 51,177.80/x
  3. Step 3: Cross multiply
    54,288.20x = 81,605.10 × 51,177.80
  4. Step 4: Simplify right side
    54,288.20x = 4,176,369,486.78
  5. Step 5: Solve for x
    x = 4,176,369,486.78/54,288.20
  6. Step 6: Final answer
    x = 76,929.60

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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.