Home / 87,919.26-131,878.68-21,359.40

Finding the Fourth Proportional to 87,919.26, 131,878.68 and 21,359.40

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Solution

The fourth proportional to 87,919.26, 131,878.68 and 21,359.40 is: 32,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,919.26 : 131,878.68 = 21,359.40 : x
  2. Step 2: Convert to fraction form
    87,919.26/131,878.68 = 21,359.40/x
  3. Step 3: Cross multiply
    87,919.26x = 131,878.68 × 21,359.40
  4. Step 4: Simplify right side
    87,919.26x = 2,816,849,477.59
  5. Step 5: Solve for x
    x = 2,816,849,477.59/87,919.26
  6. Step 6: Final answer
    x = 32,039.05

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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.