Home / 74,129.40-111,121.20-36,658.80

Finding the Fourth Proportional to 74,129.40, 111,121.20 and 36,658.80

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Solution

The fourth proportional to 74,129.40, 111,121.20 and 36,658.80 is: 54,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,129.40 : 111,121.20 = 36,658.80 : x
  2. Step 2: Convert to fraction form
    74,129.40/111,121.20 = 36,658.80/x
  3. Step 3: Cross multiply
    74,129.40x = 111,121.20 × 36,658.80
  4. Step 4: Simplify right side
    74,129.40x = 4,073,569,846.56
  5. Step 5: Solve for x
    x = 4,073,569,846.56/74,129.40
  6. Step 6: Final answer
    x = 54,952.15

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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.