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Finding the Fourth Proportional to 40,291.60, 60,365.40 and 19,469.20

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Solution

The fourth proportional to 40,291.60, 60,365.40 and 19,469.20 is: 29,169.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,291.60 : 60,365.40 = 19,469.20 : x
  2. Step 2: Convert to fraction form
    40,291.60/60,365.40 = 19,469.20/x
  3. Step 3: Cross multiply
    40,291.60x = 60,365.40 × 19,469.20
  4. Step 4: Simplify right side
    40,291.60x = 1,175,266,045.68
  5. Step 5: Solve for x
    x = 1,175,266,045.68/40,291.60
  6. Step 6: Final answer
    x = 29,169.01

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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.