Home / 87,806.35-131,709.86-21,246.38

Finding the Fourth Proportional to 87,806.35, 131,709.86 and 21,246.38

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Solution

The fourth proportional to 87,806.35, 131,709.86 and 21,246.38 is: 31,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.35 : 131,709.86 = 21,246.38 : x
  2. Step 2: Convert to fraction form
    87,806.35/131,709.86 = 21,246.38/x
  3. Step 3: Cross multiply
    87,806.35x = 131,709.86 × 21,246.38
  4. Step 4: Simplify right side
    87,806.35x = 2,798,356,970.53
  5. Step 5: Solve for x
    x = 2,798,356,970.53/87,806.35
  6. Step 6: Final answer
    x = 31,869.64

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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.