Home / 66,367.20-99,550.80-31,375.20

Finding the Fourth Proportional to 66,367.20, 99,550.80 and 31,375.20

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Solution

The fourth proportional to 66,367.20, 99,550.80 and 31,375.20 is: 47,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,367.20 : 99,550.80 = 31,375.20 : x
  2. Step 2: Convert to fraction form
    66,367.20/99,550.80 = 31,375.20/x
  3. Step 3: Cross multiply
    66,367.20x = 99,550.80 × 31,375.20
  4. Step 4: Simplify right side
    66,367.20x = 3,123,426,260.16
  5. Step 5: Solve for x
    x = 3,123,426,260.16/66,367.20
  6. Step 6: Final answer
    x = 47,062.80

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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.