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Finding the Fourth Proportional to 94,608, 141,912 and 38,478.65

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Solution

The fourth proportional to 94,608, 141,912 and 38,478.65 is: 57,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,608 : 141,912 = 38,478.65 : x
  2. Step 2: Convert to fraction form
    94,608/141,912 = 38,478.65/x
  3. Step 3: Cross multiply
    94,608x = 141,912 × 38,478.65
  4. Step 4: Simplify right side
    94,608x = 5,460,581,469.24
  5. Step 5: Solve for x
    x = 5,460,581,469.24/94,608
  6. Step 6: Final answer
    x = 57,717.97

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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.