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Finding the Fourth Proportional to 79,163.84, 109,246.24 and 42,865.68

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Solution

The fourth proportional to 79,163.84, 109,246.24 and 42,865.68 is: 59,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,163.84 : 109,246.24 = 42,865.68 : x
  2. Step 2: Convert to fraction form
    79,163.84/109,246.24 = 42,865.68/x
  3. Step 3: Cross multiply
    79,163.84x = 109,246.24 × 42,865.68
  4. Step 4: Simplify right side
    79,163.84x = 4,682,914,365.04
  5. Step 5: Solve for x
    x = 4,682,914,365.04/79,163.84
  6. Step 6: Final answer
    x = 59,154.71

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1.5x scale

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.