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Finding the Fourth Proportional to 71,506.60, 98,679.54 and 39,676.12

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Solution

The fourth proportional to 71,506.60, 98,679.54 and 39,676.12 is: 54,753.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,506.60 : 98,679.54 = 39,676.12 : x
  2. Step 2: Convert to fraction form
    71,506.60/98,679.54 = 39,676.12/x
  3. Step 3: Cross multiply
    71,506.60x = 98,679.54 × 39,676.12
  4. Step 4: Simplify right side
    71,506.60x = 3,915,221,270.58
  5. Step 5: Solve for x
    x = 3,915,221,270.58/71,506.60
  6. Step 6: Final answer
    x = 54,753.29

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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.