Home / 54,453.40-81,680.10-19,432.60

Finding the Fourth Proportional to 54,453.40, 81,680.10 and 19,432.60

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Solution

The fourth proportional to 54,453.40, 81,680.10 and 19,432.60 is: 29,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,453.40 : 81,680.10 = 19,432.60 : x
  2. Step 2: Convert to fraction form
    54,453.40/81,680.10 = 19,432.60/x
  3. Step 3: Cross multiply
    54,453.40x = 81,680.10 × 19,432.60
  4. Step 4: Simplify right side
    54,453.40x = 1,587,256,711.26
  5. Step 5: Solve for x
    x = 1,587,256,711.26/54,453.40
  6. Step 6: Final answer
    x = 29,148.90

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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.