Home / 87,947.87-131,919.93-21,388.34

Finding the Fourth Proportional to 87,947.87, 131,919.93 and 21,388.34

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Solution

The fourth proportional to 87,947.87, 131,919.93 and 21,388.34 is: 32,082.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,947.87 : 131,919.93 = 21,388.34 : x
  2. Step 2: Convert to fraction form
    87,947.87/131,919.93 = 21,388.34/x
  3. Step 3: Cross multiply
    87,947.87x = 131,919.93 × 21,388.34
  4. Step 4: Simplify right side
    87,947.87x = 2,821,547,656.02
  5. Step 5: Solve for x
    x = 2,821,547,656.02/87,947.87
  6. Step 6: Final answer
    x = 32,082.05

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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.