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Finding the Fourth Proportional to 66,910.98, 100,334.70 and 38,839.70

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Solution

The fourth proportional to 66,910.98, 100,334.70 and 38,839.70 is: 58,241.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,910.98 : 100,334.70 = 38,839.70 : x
  2. Step 2: Convert to fraction form
    66,910.98/100,334.70 = 38,839.70/x
  3. Step 3: Cross multiply
    66,910.98x = 100,334.70 × 38,839.70
  4. Step 4: Simplify right side
    66,910.98x = 3,896,969,647.59
  5. Step 5: Solve for x
    x = 3,896,969,647.59/66,910.98
  6. Step 6: Final answer
    x = 58,241.11

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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.