Home / 72,754.08-100,401.98-40,491.38

Finding the Fourth Proportional to 72,754.08, 100,401.98 and 40,491.38

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Solution

The fourth proportional to 72,754.08, 100,401.98 and 40,491.38 is: 55,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,754.08 : 100,401.98 = 40,491.38 : x
  2. Step 2: Convert to fraction form
    72,754.08/100,401.98 = 40,491.38/x
  3. Step 3: Cross multiply
    72,754.08x = 100,401.98 × 40,491.38
  4. Step 4: Simplify right side
    72,754.08x = 4,065,414,020.47
  5. Step 5: Solve for x
    x = 4,065,414,020.47/72,754.08
  6. Step 6: Final answer
    x = 55,878.85

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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.