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Finding the Fourth Proportional to 81,252.77, 121,894.41 and 36,882.64

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Solution

The fourth proportional to 81,252.77, 121,894.41 and 36,882.64 is: 55,330.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,252.77 : 121,894.41 = 36,882.64 : x
  2. Step 2: Convert to fraction form
    81,252.77/121,894.41 = 36,882.64/x
  3. Step 3: Cross multiply
    81,252.77x = 121,894.41 × 36,882.64
  4. Step 4: Simplify right side
    81,252.77x = 4,495,787,457.63
  5. Step 5: Solve for x
    x = 4,495,787,457.63/81,252.77
  6. Step 6: Final answer
    x = 55,330.89

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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.