Home / 42,990.92-64,351.20-27,141.09

Finding the Fourth Proportional to 42,990.92, 64,351.20 and 27,141.09

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Solution

The fourth proportional to 42,990.92, 64,351.20 and 27,141.09 is: 40,626.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,990.92 : 64,351.20 = 27,141.09 : x
  2. Step 2: Convert to fraction form
    42,990.92/64,351.20 = 27,141.09/x
  3. Step 3: Cross multiply
    42,990.92x = 64,351.20 × 27,141.09
  4. Step 4: Simplify right side
    42,990.92x = 1,746,561,710.81
  5. Step 5: Solve for x
    x = 1,746,561,710.81/42,990.92
  6. Step 6: Final answer
    x = 40,626.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.