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Finding the Fourth Proportional to 64,087.20, 96,207.60 and 36,029.60

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Solution

The fourth proportional to 64,087.20, 96,207.60 and 36,029.60 is: 54,087.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,087.20 : 96,207.60 = 36,029.60 : x
  2. Step 2: Convert to fraction form
    64,087.20/96,207.60 = 36,029.60/x
  3. Step 3: Cross multiply
    64,087.20x = 96,207.60 × 36,029.60
  4. Step 4: Simplify right side
    64,087.20x = 3,466,321,344.96
  5. Step 5: Solve for x
    x = 3,466,321,344.96/64,087.20
  6. Step 6: Final answer
    x = 54,087.58

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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.