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Finding the Fourth Proportional to 40,292, 60,394.80 and 19,469.60

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Solution

The fourth proportional to 40,292, 60,394.80 and 19,469.60 is: 29,183.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,292 : 60,394.80 = 19,469.60 : x
  2. Step 2: Convert to fraction form
    40,292/60,394.80 = 19,469.60/x
  3. Step 3: Cross multiply
    40,292x = 60,394.80 × 19,469.60
  4. Step 4: Simplify right side
    40,292x = 1,175,862,598.08
  5. Step 5: Solve for x
    x = 1,175,862,598.08/40,292
  6. Step 6: Final answer
    x = 29,183.53

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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.