Home / 72,635.97-100,240.22-40,371.23

Finding the Fourth Proportional to 72,635.97, 100,240.22 and 40,371.23

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Solution

The fourth proportional to 72,635.97, 100,240.22 and 40,371.23 is: 55,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,635.97 : 100,240.22 = 40,371.23 : x
  2. Step 2: Convert to fraction form
    72,635.97/100,240.22 = 40,371.23/x
  3. Step 3: Cross multiply
    72,635.97x = 100,240.22 × 40,371.23
  4. Step 4: Simplify right side
    72,635.97x = 4,046,820,273.81
  5. Step 5: Solve for x
    x = 4,046,820,273.81/72,635.97
  6. Step 6: Final answer
    x = 55,713.72

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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.