Home / 71,868.74-99,181.92-40,037.64

Finding the Fourth Proportional to 71,868.74, 99,181.92 and 40,037.64

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Solution

The fourth proportional to 71,868.74, 99,181.92 and 40,037.64 is: 55,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,868.74 : 99,181.92 = 40,037.64 : x
  2. Step 2: Convert to fraction form
    71,868.74/99,181.92 = 40,037.64/x
  3. Step 3: Cross multiply
    71,868.74x = 99,181.92 × 40,037.64
  4. Step 4: Simplify right side
    71,868.74x = 3,971,010,007.47
  5. Step 5: Solve for x
    x = 3,971,010,007.47/71,868.74
  6. Step 6: Final answer
    x = 55,253.65

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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.