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Finding the Fourth Proportional to 79,172.76, 109,254.52 and 43,362.96

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Solution

The fourth proportional to 79,172.76, 109,254.52 and 43,362.96 is: 59,838.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,172.76 : 109,254.52 = 43,362.96 : x
  2. Step 2: Convert to fraction form
    79,172.76/109,254.52 = 43,362.96/x
  3. Step 3: Cross multiply
    79,172.76x = 109,254.52 × 43,362.96
  4. Step 4: Simplify right side
    79,172.76x = 4,737,599,380.58
  5. Step 5: Solve for x
    x = 4,737,599,380.58/79,172.76
  6. Step 6: Final answer
    x = 59,838.75

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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.