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Finding the Fourth Proportional to 66,920.71, 100,247.23 and 40,251.97

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Solution

The fourth proportional to 66,920.71, 100,247.23 and 40,251.97 is: 60,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,920.71 : 100,247.23 = 40,251.97 : x
  2. Step 2: Convert to fraction form
    66,920.71/100,247.23 = 40,251.97/x
  3. Step 3: Cross multiply
    66,920.71x = 100,247.23 × 40,251.97
  4. Step 4: Simplify right side
    66,920.71x = 4,035,148,494.54
  5. Step 5: Solve for x
    x = 4,035,148,494.54/66,920.71
  6. Step 6: Final answer
    x = 60,297.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.