Home / 54,288.40-81,432.60-51,437.20

Finding the Fourth Proportional to 54,288.40, 81,432.60 and 51,437.20

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Solution

The fourth proportional to 54,288.40, 81,432.60 and 51,437.20 is: 77,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288.40 : 81,432.60 = 51,437.20 : x
  2. Step 2: Convert to fraction form
    54,288.40/81,432.60 = 51,437.20/x
  3. Step 3: Cross multiply
    54,288.40x = 81,432.60 × 51,437.20
  4. Step 4: Simplify right side
    54,288.40x = 4,188,664,932.72
  5. Step 5: Solve for x
    x = 4,188,664,932.72/54,288.40
  6. Step 6: Final answer
    x = 77,155.80

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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.