Home / 71,860.59-99,161.17-40,028.80

Finding the Fourth Proportional to 71,860.59, 99,161.17 and 40,028.80

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Solution

The fourth proportional to 71,860.59, 99,161.17 and 40,028.80 is: 55,236.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,860.59 : 99,161.17 = 40,028.80 : x
  2. Step 2: Convert to fraction form
    71,860.59/99,161.17 = 40,028.80/x
  3. Step 3: Cross multiply
    71,860.59x = 99,161.17 × 40,028.80
  4. Step 4: Simplify right side
    71,860.59x = 3,969,302,641.70
  5. Step 5: Solve for x
    x = 3,969,302,641.70/71,860.59
  6. Step 6: Final answer
    x = 55,236.15

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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.