Home / 87,813.70-131,720.55-56,320.90

Finding the Fourth Proportional to 87,813.70, 131,720.55 and 56,320.90

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Solution

The fourth proportional to 87,813.70, 131,720.55 and 56,320.90 is: 84,481.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,813.70 : 131,720.55 = 56,320.90 : x
  2. Step 2: Convert to fraction form
    87,813.70/131,720.55 = 56,320.90/x
  3. Step 3: Cross multiply
    87,813.70x = 131,720.55 × 56,320.90
  4. Step 4: Simplify right side
    87,813.70x = 7,418,619,924.50
  5. Step 5: Solve for x
    x = 7,418,619,924.50/87,813.70
  6. Step 6: Final answer
    x = 84,481.35

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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.