Home / 71,899.76-99,219.67-40,067.84

Finding the Fourth Proportional to 71,899.76, 99,219.67 and 40,067.84

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Solution

The fourth proportional to 71,899.76, 99,219.67 and 40,067.84 is: 55,292.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,899.76 : 99,219.67 = 40,067.84 : x
  2. Step 2: Convert to fraction form
    71,899.76/99,219.67 = 40,067.84/x
  3. Step 3: Cross multiply
    71,899.76x = 99,219.67 × 40,067.84
  4. Step 4: Simplify right side
    71,899.76x = 3,975,517,165.98
  5. Step 5: Solve for x
    x = 3,975,517,165.98/71,899.76
  6. Step 6: Final answer
    x = 55,292.50

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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.