Home / 71,974.71-99,327.06-40,149.81

Finding the Fourth Proportional to 71,974.71, 99,327.06 and 40,149.81

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Solution

The fourth proportional to 71,974.71, 99,327.06 and 40,149.81 is: 55,407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,974.71 : 99,327.06 = 40,149.81 : x
  2. Step 2: Convert to fraction form
    71,974.71/99,327.06 = 40,149.81/x
  3. Step 3: Cross multiply
    71,974.71x = 99,327.06 × 40,149.81
  4. Step 4: Simplify right side
    71,974.71x = 3,987,962,586.86
  5. Step 5: Solve for x
    x = 3,987,962,586.86/71,974.71
  6. Step 6: Final answer
    x = 55,407.83

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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.