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Finding the Fourth Proportional to 70,691, 97,556.14 and 40,481.72

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Solution

The fourth proportional to 70,691, 97,556.14 and 40,481.72 is: 55,866.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,691 : 97,556.14 = 40,481.72 : x
  2. Step 2: Convert to fraction form
    70,691/97,556.14 = 40,481.72/x
  3. Step 3: Cross multiply
    70,691x = 97,556.14 × 40,481.72
  4. Step 4: Simplify right side
    70,691x = 3,949,240,343.76
  5. Step 5: Solve for x
    x = 3,949,240,343.76/70,691
  6. Step 6: Final answer
    x = 55,866.24

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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.