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Finding the Fourth Proportional to 66,850.80, 100,276.20 and 63,570.30

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Solution

The fourth proportional to 66,850.80, 100,276.20 and 63,570.30 is: 95,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,850.80 : 100,276.20 = 63,570.30 : x
  2. Step 2: Convert to fraction form
    66,850.80/100,276.20 = 63,570.30/x
  3. Step 3: Cross multiply
    66,850.80x = 100,276.20 × 63,570.30
  4. Step 4: Simplify right side
    66,850.80x = 6,374,588,116.86
  5. Step 5: Solve for x
    x = 6,374,588,116.86/66,850.80
  6. Step 6: Final answer
    x = 95,355.45

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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.