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Finding the Fourth Proportional to 80,864.60, 121,253.70 and 34,064.60

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Solution

The fourth proportional to 80,864.60, 121,253.70 and 34,064.60 is: 51,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,864.60 : 121,253.70 = 34,064.60 : x
  2. Step 2: Convert to fraction form
    80,864.60/121,253.70 = 34,064.60/x
  3. Step 3: Cross multiply
    80,864.60x = 121,253.70 × 34,064.60
  4. Step 4: Simplify right side
    80,864.60x = 4,130,458,789.02
  5. Step 5: Solve for x
    x = 4,130,458,789.02/80,864.60
  6. Step 6: Final answer
    x = 51,078.70

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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.