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Finding the Fourth Proportional to 79,422.34, 119,691.30 and 71,534.74

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Solution

The fourth proportional to 79,422.34, 119,691.30 and 71,534.74 is: 107,804.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,422.34 : 119,691.30 = 71,534.74 : x
  2. Step 2: Convert to fraction form
    79,422.34/119,691.30 = 71,534.74/x
  3. Step 3: Cross multiply
    79,422.34x = 119,691.30 × 71,534.74
  4. Step 4: Simplify right side
    79,422.34x = 8,562,086,025.76
  5. Step 5: Solve for x
    x = 8,562,086,025.76/79,422.34
  6. Step 6: Final answer
    x = 107,804.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.