Home / 71,540.27-98,730.05-39,709.70

Finding the Fourth Proportional to 71,540.27, 98,730.05 and 39,709.70

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Solution

The fourth proportional to 71,540.27, 98,730.05 and 39,709.70 is: 54,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,540.27 : 98,730.05 = 39,709.70 : x
  2. Step 2: Convert to fraction form
    71,540.27/98,730.05 = 39,709.70/x
  3. Step 3: Cross multiply
    71,540.27x = 98,730.05 × 39,709.70
  4. Step 4: Simplify right side
    71,540.27x = 3,920,540,666.49
  5. Step 5: Solve for x
    x = 3,920,540,666.49/71,540.27
  6. Step 6: Final answer
    x = 54,801.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.