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Finding the Fourth Proportional to 49,842.80, 74,764.20 and 45,906.20

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Solution

The fourth proportional to 49,842.80, 74,764.20 and 45,906.20 is: 68,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,842.80 : 74,764.20 = 45,906.20 : x
  2. Step 2: Convert to fraction form
    49,842.80/74,764.20 = 45,906.20/x
  3. Step 3: Cross multiply
    49,842.80x = 74,764.20 × 45,906.20
  4. Step 4: Simplify right side
    49,842.80x = 3,432,140,318.04
  5. Step 5: Solve for x
    x = 3,432,140,318.04/49,842.80
  6. Step 6: Final answer
    x = 68,859.30

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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.