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Finding the Fourth Proportional to 80,957.88, 121,426.74 and 34,204.68

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Solution

The fourth proportional to 80,957.88, 121,426.74 and 34,204.68 is: 51,302.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,957.88 : 121,426.74 = 34,204.68 : x
  2. Step 2: Convert to fraction form
    80,957.88/121,426.74 = 34,204.68/x
  3. Step 3: Cross multiply
    80,957.88x = 121,426.74 × 34,204.68
  4. Step 4: Simplify right side
    80,957.88x = 4,153,362,785.14
  5. Step 5: Solve for x
    x = 4,153,362,785.14/80,957.88
  6. Step 6: Final answer
    x = 51,302.76

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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.