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Finding the Fourth Proportional to 66,842.20, 100,230.90 and 37,228.60

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Solution

The fourth proportional to 66,842.20, 100,230.90 and 37,228.60 is: 55,824.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,842.20 : 100,230.90 = 37,228.60 : x
  2. Step 2: Convert to fraction form
    66,842.20/100,230.90 = 37,228.60/x
  3. Step 3: Cross multiply
    66,842.20x = 100,230.90 × 37,228.60
  4. Step 4: Simplify right side
    66,842.20x = 3,731,456,083.74
  5. Step 5: Solve for x
    x = 3,731,456,083.74/66,842.20
  6. Step 6: Final answer
    x = 55,824.85

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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.