Home / 73,864.92-102,621.78-72,979.20

Finding the Fourth Proportional to 73,864.92, 102,621.78 and 72,979.20

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Solution

The fourth proportional to 73,864.92, 102,621.78 and 72,979.20 is: 101,391.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,864.92 : 102,621.78 = 72,979.20 : x
  2. Step 2: Convert to fraction form
    73,864.92/102,621.78 = 72,979.20/x
  3. Step 3: Cross multiply
    73,864.92x = 102,621.78 × 72,979.20
  4. Step 4: Simplify right side
    73,864.92x = 7,489,255,406.98
  5. Step 5: Solve for x
    x = 7,489,255,406.98/73,864.92
  6. Step 6: Final answer
    x = 101,391.23

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.