Home / 72,206.46-99,645.12-40,375.89

Finding the Fourth Proportional to 72,206.46, 99,645.12 and 40,375.89

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Solution

The fourth proportional to 72,206.46, 99,645.12 and 40,375.89 is: 55,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,206.46 : 99,645.12 = 40,375.89 : x
  2. Step 2: Convert to fraction form
    72,206.46/99,645.12 = 40,375.89/x
  3. Step 3: Cross multiply
    72,206.46x = 99,645.12 × 40,375.89
  4. Step 4: Simplify right side
    72,206.46x = 4,023,260,404.16
  5. Step 5: Solve for x
    x = 4,023,260,404.16/72,206.46
  6. Step 6: Final answer
    x = 55,718.84

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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.