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Finding the Fourth Proportional to 71,480.07, 98,640.99 and 39,648.69

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Solution

The fourth proportional to 71,480.07, 98,640.99 and 39,648.69 is: 54,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,480.07 : 98,640.99 = 39,648.69 : x
  2. Step 2: Convert to fraction form
    71,480.07/98,640.99 = 39,648.69/x
  3. Step 3: Cross multiply
    71,480.07x = 98,640.99 × 39,648.69
  4. Step 4: Simplify right side
    71,480.07x = 3,910,986,033.80
  5. Step 5: Solve for x
    x = 3,910,986,033.80/71,480.07
  6. Step 6: Final answer
    x = 54,714.36

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1.5x scale

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.