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Finding the Fourth Proportional to 68,220.90, 102,287.34 and 28,767.42

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Solution

The fourth proportional to 68,220.90, 102,287.34 and 28,767.42 is: 43,132.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,220.90 : 102,287.34 = 28,767.42 : x
  2. Step 2: Convert to fraction form
    68,220.90/102,287.34 = 28,767.42/x
  3. Step 3: Cross multiply
    68,220.90x = 102,287.34 × 28,767.42
  4. Step 4: Simplify right side
    68,220.90x = 2,942,542,870.46
  5. Step 5: Solve for x
    x = 2,942,542,870.46/68,220.90
  6. Step 6: Final answer
    x = 43,132.57

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1.5x scale

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.