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Finding the Fourth Proportional to 80,703.71, 121,054.58 and 36,299.10

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Solution

The fourth proportional to 80,703.71, 121,054.58 and 36,299.10 is: 54,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,703.71 : 121,054.58 = 36,299.10 : x
  2. Step 2: Convert to fraction form
    80,703.71/121,054.58 = 36,299.10/x
  3. Step 3: Cross multiply
    80,703.71x = 121,054.58 × 36,299.10
  4. Step 4: Simplify right side
    80,703.71x = 4,394,172,123.38
  5. Step 5: Solve for x
    x = 4,394,172,123.38/80,703.71
  6. Step 6: Final answer
    x = 54,448.21

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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.