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Finding the Fourth Proportional to 80,041.71, 120,134.93 and 42,633.03

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Solution

The fourth proportional to 80,041.71, 120,134.93 and 42,633.03 is: 63,988.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,041.71 : 120,134.93 = 42,633.03 : x
  2. Step 2: Convert to fraction form
    80,041.71/120,134.93 = 42,633.03/x
  3. Step 3: Cross multiply
    80,041.71x = 120,134.93 × 42,633.03
  4. Step 4: Simplify right side
    80,041.71x = 5,121,715,861.57
  5. Step 5: Solve for x
    x = 5,121,715,861.57/80,041.71
  6. Step 6: Final answer
    x = 63,988.09

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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.