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Finding the Fourth Proportional to 79,473.87, 109,722.11 and 52,639.38

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Solution

The fourth proportional to 79,473.87, 109,722.11 and 52,639.38 is: 72,674.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,473.87 : 109,722.11 = 52,639.38 : x
  2. Step 2: Convert to fraction form
    79,473.87/109,722.11 = 52,639.38/x
  3. Step 3: Cross multiply
    79,473.87x = 109,722.11 × 52,639.38
  4. Step 4: Simplify right side
    79,473.87x = 5,775,703,579.49
  5. Step 5: Solve for x
    x = 5,775,703,579.49/79,473.87
  6. Step 6: Final answer
    x = 72,674.25

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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.