Home / 71,921.64-99,253.16-40,087.12

Finding the Fourth Proportional to 71,921.64, 99,253.16 and 40,087.12

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Solution

The fourth proportional to 71,921.64, 99,253.16 and 40,087.12 is: 55,320.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,921.64 : 99,253.16 = 40,087.12 : x
  2. Step 2: Convert to fraction form
    71,921.64/99,253.16 = 40,087.12/x
  3. Step 3: Cross multiply
    71,921.64x = 99,253.16 × 40,087.12
  4. Step 4: Simplify right side
    71,921.64x = 3,978,773,335.30
  5. Step 5: Solve for x
    x = 3,978,773,335.30/71,921.64
  6. Step 6: Final answer
    x = 55,320.95

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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.