Home / 74,288.40-102,517.38-40,296.80

Finding the Fourth Proportional to 74,288.40, 102,517.38 and 40,296.80

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Solution

The fourth proportional to 74,288.40, 102,517.38 and 40,296.80 is: 55,609.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,288.40 : 102,517.38 = 40,296.80 : x
  2. Step 2: Convert to fraction form
    74,288.40/102,517.38 = 40,296.80/x
  3. Step 3: Cross multiply
    74,288.40x = 102,517.38 × 40,296.80
  4. Step 4: Simplify right side
    74,288.40x = 4,131,122,358.38
  5. Step 5: Solve for x
    x = 4,131,122,358.38/74,288.40
  6. Step 6: Final answer
    x = 55,609.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.