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Finding the Fourth Proportional to 80,402.60, 110,827.68 and 63,379.22

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Solution

The fourth proportional to 80,402.60, 110,827.68 and 63,379.22 is: 87,362.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,402.60 : 110,827.68 = 63,379.22 : x
  2. Step 2: Convert to fraction form
    80,402.60/110,827.68 = 63,379.22/x
  3. Step 3: Cross multiply
    80,402.60x = 110,827.68 × 63,379.22
  4. Step 4: Simplify right side
    80,402.60x = 7,024,171,912.81
  5. Step 5: Solve for x
    x = 7,024,171,912.81/80,402.60
  6. Step 6: Final answer
    x = 87,362.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.