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Finding the Fourth Proportional to 68,438.67, 94,443.03 and 38,223.78

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Solution

The fourth proportional to 68,438.67, 94,443.03 and 38,223.78 is: 52,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,438.67 : 94,443.03 = 38,223.78 : x
  2. Step 2: Convert to fraction form
    68,438.67/94,443.03 = 38,223.78/x
  3. Step 3: Cross multiply
    68,438.67x = 94,443.03 × 38,223.78
  4. Step 4: Simplify right side
    68,438.67x = 3,609,969,601.25
  5. Step 5: Solve for x
    x = 3,609,969,601.25/68,438.67
  6. Step 6: Final answer
    x = 52,747.51

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1.5x scale

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.