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Finding the Fourth Proportional to 40,889.60, 61,291.20 and 23,321.60

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Solution

The fourth proportional to 40,889.60, 61,291.20 and 23,321.60 is: 34,957.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,889.60 : 61,291.20 = 23,321.60 : x
  2. Step 2: Convert to fraction form
    40,889.60/61,291.20 = 23,321.60/x
  3. Step 3: Cross multiply
    40,889.60x = 61,291.20 × 23,321.60
  4. Step 4: Simplify right side
    40,889.60x = 1,429,408,849.92
  5. Step 5: Solve for x
    x = 1,429,408,849.92/40,889.60
  6. Step 6: Final answer
    x = 34,957.76

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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.