Home / 54,432.90-81,680.47-21,148.65

Finding the Fourth Proportional to 54,432.90, 81,680.47 and 21,148.65

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Solution

The fourth proportional to 54,432.90, 81,680.47 and 21,148.65 is: 31,735.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,432.90 : 81,680.47 = 21,148.65 : x
  2. Step 2: Convert to fraction form
    54,432.90/81,680.47 = 21,148.65/x
  3. Step 3: Cross multiply
    54,432.90x = 81,680.47 × 21,148.65
  4. Step 4: Simplify right side
    54,432.90x = 1,727,431,618.99
  5. Step 5: Solve for x
    x = 1,727,431,618.99/54,432.90
  6. Step 6: Final answer
    x = 31,735.06

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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.