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Finding the Fourth Proportional to 70,104.71, 96,740.87 and 39,889.42

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Solution

The fourth proportional to 70,104.71, 96,740.87 and 39,889.42 is: 55,045.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,104.71 : 96,740.87 = 39,889.42 : x
  2. Step 2: Convert to fraction form
    70,104.71/96,740.87 = 39,889.42/x
  3. Step 3: Cross multiply
    70,104.71x = 96,740.87 × 39,889.42
  4. Step 4: Simplify right side
    70,104.71x = 3,858,936,753.30
  5. Step 5: Solve for x
    x = 3,858,936,753.30/70,104.71
  6. Step 6: Final answer
    x = 55,045.33

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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.