Home / 71,952.88-99,298.05-40,121.77

Finding the Fourth Proportional to 71,952.88, 99,298.05 and 40,121.77

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Solution

The fourth proportional to 71,952.88, 99,298.05 and 40,121.77 is: 55,369.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,952.88 : 99,298.05 = 40,121.77 : x
  2. Step 2: Convert to fraction form
    71,952.88/99,298.05 = 40,121.77/x
  3. Step 3: Cross multiply
    71,952.88x = 99,298.05 × 40,121.77
  4. Step 4: Simplify right side
    71,952.88x = 3,984,013,523.55
  5. Step 5: Solve for x
    x = 3,984,013,523.55/71,952.88
  6. Step 6: Final answer
    x = 55,369.76

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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.