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Finding the Fourth Proportional to 72,679.08, 108,971.37 and 34,712.76

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Solution

The fourth proportional to 72,679.08, 108,971.37 and 34,712.76 is: 52,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,679.08 : 108,971.37 = 34,712.76 : x
  2. Step 2: Convert to fraction form
    72,679.08/108,971.37 = 34,712.76/x
  3. Step 3: Cross multiply
    72,679.08x = 108,971.37 × 34,712.76
  4. Step 4: Simplify right side
    72,679.08x = 3,782,697,013.68
  5. Step 5: Solve for x
    x = 3,782,697,013.68/72,679.08
  6. Step 6: Final answer
    x = 52,046.57

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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.