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Finding the Fourth Proportional to 70,456.80, 97,231.18 and 40,246.12

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Solution

The fourth proportional to 70,456.80, 97,231.18 and 40,246.12 is: 55,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,456.80 : 97,231.18 = 40,246.12 : x
  2. Step 2: Convert to fraction form
    70,456.80/97,231.18 = 40,246.12/x
  3. Step 3: Cross multiply
    70,456.80x = 97,231.18 × 40,246.12
  4. Step 4: Simplify right side
    70,456.80x = 3,913,177,738.02
  5. Step 5: Solve for x
    x = 3,913,177,738.02/70,456.80
  6. Step 6: Final answer
    x = 55,540.10

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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.