Home / 69,389.61-95,758.49-40,709.78

Finding the Fourth Proportional to 69,389.61, 95,758.49 and 40,709.78

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Solution

The fourth proportional to 69,389.61, 95,758.49 and 40,709.78 is: 56,179.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,389.61 : 95,758.49 = 40,709.78 : x
  2. Step 2: Convert to fraction form
    69,389.61/95,758.49 = 40,709.78/x
  3. Step 3: Cross multiply
    69,389.61x = 95,758.49 × 40,709.78
  4. Step 4: Simplify right side
    69,389.61x = 3,898,306,378.69
  5. Step 5: Solve for x
    x = 3,898,306,378.69/69,389.61
  6. Step 6: Final answer
    x = 56,179.97

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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.