Home / 87,621-131,705.85-57,826.70

Finding the Fourth Proportional to 87,621, 131,705.85 and 57,826.70

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Solution

The fourth proportional to 87,621, 131,705.85 and 57,826.70 is: 86,921.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,621 : 131,705.85 = 57,826.70 : x
  2. Step 2: Convert to fraction form
    87,621/131,705.85 = 57,826.70/x
  3. Step 3: Cross multiply
    87,621x = 131,705.85 × 57,826.70
  4. Step 4: Simplify right side
    87,621x = 7,616,114,017.67
  5. Step 5: Solve for x
    x = 7,616,114,017.67/87,621
  6. Step 6: Final answer
    x = 86,921.10

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1.5x scale

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.