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Finding the Fourth Proportional to 84,632.42, 126,948.26 and 49,793.78

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Solution

The fourth proportional to 84,632.42, 126,948.26 and 49,793.78 is: 74,690.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,632.42 : 126,948.26 = 49,793.78 : x
  2. Step 2: Convert to fraction form
    84,632.42/126,948.26 = 49,793.78/x
  3. Step 3: Cross multiply
    84,632.42x = 126,948.26 × 49,793.78
  4. Step 4: Simplify right side
    84,632.42x = 6,321,233,729.82
  5. Step 5: Solve for x
    x = 6,321,233,729.82/84,632.42
  6. Step 6: Final answer
    x = 74,690.45

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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.