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Finding the Fourth Proportional to 71,473.55, 98,630.97 and 39,645.41

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Solution

The fourth proportional to 71,473.55, 98,630.97 and 39,645.41 is: 54,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,473.55 : 98,630.97 = 39,645.41 : x
  2. Step 2: Convert to fraction form
    71,473.55/98,630.97 = 39,645.41/x
  3. Step 3: Cross multiply
    71,473.55x = 98,630.97 × 39,645.41
  4. Step 4: Simplify right side
    71,473.55x = 3,910,264,751.19
  5. Step 5: Solve for x
    x = 3,910,264,751.19/71,473.55
  6. Step 6: Final answer
    x = 54,709.26

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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.