Home / 71,983.88-99,337.84-40,154.79

Finding the Fourth Proportional to 71,983.88, 99,337.84 and 40,154.79

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Solution

The fourth proportional to 71,983.88, 99,337.84 and 40,154.79 is: 55,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,983.88 : 99,337.84 = 40,154.79 : x
  2. Step 2: Convert to fraction form
    71,983.88/99,337.84 = 40,154.79/x
  3. Step 3: Cross multiply
    71,983.88x = 99,337.84 × 40,154.79
  4. Step 4: Simplify right side
    71,983.88x = 3,988,890,003.87
  5. Step 5: Solve for x
    x = 3,988,890,003.87/71,983.88
  6. Step 6: Final answer
    x = 55,413.66

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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.