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Finding the Fourth Proportional to 70,627.88, 97,442.70 and 39,996.80

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Solution

The fourth proportional to 70,627.88, 97,442.70 and 39,996.80 is: 55,182.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,627.88 : 97,442.70 = 39,996.80 : x
  2. Step 2: Convert to fraction form
    70,627.88/97,442.70 = 39,996.80/x
  3. Step 3: Cross multiply
    70,627.88x = 97,442.70 × 39,996.80
  4. Step 4: Simplify right side
    70,627.88x = 3,897,396,183.36
  5. Step 5: Solve for x
    x = 3,897,396,183.36/70,627.88
  6. Step 6: Final answer
    x = 55,182.12

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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.