Home / 71,986.36-99,340.02-40,154.44

Finding the Fourth Proportional to 71,986.36, 99,340.02 and 40,154.44

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Solution

The fourth proportional to 71,986.36, 99,340.02 and 40,154.44 is: 55,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,986.36 : 99,340.02 = 40,154.44 : x
  2. Step 2: Convert to fraction form
    71,986.36/99,340.02 = 40,154.44/x
  3. Step 3: Cross multiply
    71,986.36x = 99,340.02 × 40,154.44
  4. Step 4: Simplify right side
    71,986.36x = 3,988,942,872.69
  5. Step 5: Solve for x
    x = 3,988,942,872.69/71,986.36
  6. Step 6: Final answer
    x = 55,412.48

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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.