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Finding the Fourth Proportional to 66,918.74, 100,346.33 and 38,847.49

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Solution

The fourth proportional to 66,918.74, 100,346.33 and 38,847.49 is: 58,252.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,918.74 : 100,346.33 = 38,847.49 : x
  2. Step 2: Convert to fraction form
    66,918.74/100,346.33 = 38,847.49/x
  3. Step 3: Cross multiply
    66,918.74x = 100,346.33 × 38,847.49
  4. Step 4: Simplify right side
    66,918.74x = 3,898,202,897.46
  5. Step 5: Solve for x
    x = 3,898,202,897.46/66,918.74
  6. Step 6: Final answer
    x = 58,252.78

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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.