Home / 54,288.20-81,432.30-47,721.80

Finding the Fourth Proportional to 54,288.20, 81,432.30 and 47,721.80

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Solution

The fourth proportional to 54,288.20, 81,432.30 and 47,721.80 is: 71,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288.20 : 81,432.30 = 47,721.80 : x
  2. Step 2: Convert to fraction form
    54,288.20/81,432.30 = 47,721.80/x
  3. Step 3: Cross multiply
    54,288.20x = 81,432.30 × 47,721.80
  4. Step 4: Simplify right side
    54,288.20x = 3,886,095,934.14
  5. Step 5: Solve for x
    x = 3,886,095,934.14/54,288.20
  6. Step 6: Final answer
    x = 71,582.70

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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.