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Finding the Fourth Proportional to 79,104, 109,163.52 and 43,776

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Solution

The fourth proportional to 79,104, 109,163.52 and 43,776 is: 60,410.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,104 : 109,163.52 = 43,776 : x
  2. Step 2: Convert to fraction form
    79,104/109,163.52 = 43,776/x
  3. Step 3: Cross multiply
    79,104x = 109,163.52 × 43,776
  4. Step 4: Simplify right side
    79,104x = 4,778,742,251.52
  5. Step 5: Solve for x
    x = 4,778,742,251.52/79,104
  6. Step 6: Final answer
    x = 60,410.88

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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.