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Finding the Fourth Proportional to 81,394.72, 122,078.08 and 24,467.76

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Solution

The fourth proportional to 81,394.72, 122,078.08 and 24,467.76 is: 36,697.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394.72 : 122,078.08 = 24,467.76 : x
  2. Step 2: Convert to fraction form
    81,394.72/122,078.08 = 24,467.76/x
  3. Step 3: Cross multiply
    81,394.72x = 122,078.08 × 24,467.76
  4. Step 4: Simplify right side
    81,394.72x = 2,986,977,162.70
  5. Step 5: Solve for x
    x = 2,986,977,162.70/81,394.72
  6. Step 6: Final answer
    x = 36,697.43

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1.5x scale

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.