Home / 54,445.90-81,630.24-21,137.89

Finding the Fourth Proportional to 54,445.90, 81,630.24 and 21,137.89

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Solution

The fourth proportional to 54,445.90, 81,630.24 and 21,137.89 is: 31,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,445.90 : 81,630.24 = 21,137.89 : x
  2. Step 2: Convert to fraction form
    54,445.90/81,630.24 = 21,137.89/x
  3. Step 3: Cross multiply
    54,445.90x = 81,630.24 × 21,137.89
  4. Step 4: Simplify right side
    54,445.90x = 1,725,491,033.79
  5. Step 5: Solve for x
    x = 1,725,491,033.79/54,445.90
  6. Step 6: Final answer
    x = 31,691.85

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1.5x scale

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.