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Finding the Fourth Proportional to 84,401.65, 126,664.68 and 40,028.53

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Solution

The fourth proportional to 84,401.65, 126,664.68 and 40,028.53 is: 60,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,401.65 : 126,664.68 = 40,028.53 : x
  2. Step 2: Convert to fraction form
    84,401.65/126,664.68 = 40,028.53/x
  3. Step 3: Cross multiply
    84,401.65x = 126,664.68 × 40,028.53
  4. Step 4: Simplify right side
    84,401.65x = 5,070,200,943.32
  5. Step 5: Solve for x
    x = 5,070,200,943.32/84,401.65
  6. Step 6: Final answer
    x = 60,072.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.