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Finding the Fourth Proportional to 61,775.20, 92,591.20 and 28,425.28

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Solution

The fourth proportional to 61,775.20, 92,591.20 and 28,425.28 is: 42,604.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,775.20 : 92,591.20 = 28,425.28 : x
  2. Step 2: Convert to fraction form
    61,775.20/92,591.20 = 28,425.28/x
  3. Step 3: Cross multiply
    61,775.20x = 92,591.20 × 28,425.28
  4. Step 4: Simplify right side
    61,775.20x = 2,631,930,785.54
  5. Step 5: Solve for x
    x = 2,631,930,785.54/61,775.20
  6. Step 6: Final answer
    x = 42,604.97

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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.