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Finding the Fourth Proportional to 80,885.70, 121,332.15 and 27,576.90

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Solution

The fourth proportional to 80,885.70, 121,332.15 and 27,576.90 is: 41,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885.70 : 121,332.15 = 27,576.90 : x
  2. Step 2: Convert to fraction form
    80,885.70/121,332.15 = 27,576.90/x
  3. Step 3: Cross multiply
    80,885.70x = 121,332.15 × 27,576.90
  4. Step 4: Simplify right side
    80,885.70x = 3,345,964,567.34
  5. Step 5: Solve for x
    x = 3,345,964,567.34/80,885.70
  6. Step 6: Final answer
    x = 41,366.58

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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.