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Finding the Fourth Proportional to 80,636, 111,277.68 and 47,102.24

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Solution

The fourth proportional to 80,636, 111,277.68 and 47,102.24 is: 65,001.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,636 : 111,277.68 = 47,102.24 : x
  2. Step 2: Convert to fraction form
    80,636/111,277.68 = 47,102.24/x
  3. Step 3: Cross multiply
    80,636x = 111,277.68 × 47,102.24
  4. Step 4: Simplify right side
    80,636x = 5,241,427,990.00
  5. Step 5: Solve for x
    x = 5,241,427,990.00/80,636
  6. Step 6: Final answer
    x = 65,001.09

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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.