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Finding the Fourth Proportional to 70,718.38, 97,593.87 and 38,889.70

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Solution

The fourth proportional to 70,718.38, 97,593.87 and 38,889.70 is: 53,669.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,718.38 : 97,593.87 = 38,889.70 : x
  2. Step 2: Convert to fraction form
    70,718.38/97,593.87 = 38,889.70/x
  3. Step 3: Cross multiply
    70,718.38x = 97,593.87 × 38,889.70
  4. Step 4: Simplify right side
    70,718.38x = 3,795,396,326.14
  5. Step 5: Solve for x
    x = 3,795,396,326.14/70,718.38
  6. Step 6: Final answer
    x = 53,669.16

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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.