Home / 71,866.28-99,178.54-40,035.20

Finding the Fourth Proportional to 71,866.28, 99,178.54 and 40,035.20

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Solution

The fourth proportional to 71,866.28, 99,178.54 and 40,035.20 is: 55,250.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,866.28 : 99,178.54 = 40,035.20 : x
  2. Step 2: Convert to fraction form
    71,866.28/99,178.54 = 40,035.20/x
  3. Step 3: Cross multiply
    71,866.28x = 99,178.54 × 40,035.20
  4. Step 4: Simplify right side
    71,866.28x = 3,970,632,684.61
  5. Step 5: Solve for x
    x = 3,970,632,684.61/71,866.28
  6. Step 6: Final answer
    x = 55,250.29

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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.