Home / 87,628.20-131,442.30-43,263.40

Finding the Fourth Proportional to 87,628.20, 131,442.30 and 43,263.40

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Solution

The fourth proportional to 87,628.20, 131,442.30 and 43,263.40 is: 64,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,628.20 : 131,442.30 = 43,263.40 : x
  2. Step 2: Convert to fraction form
    87,628.20/131,442.30 = 43,263.40/x
  3. Step 3: Cross multiply
    87,628.20x = 131,442.30 × 43,263.40
  4. Step 4: Simplify right side
    87,628.20x = 5,686,640,801.82
  5. Step 5: Solve for x
    x = 5,686,640,801.82/87,628.20
  6. Step 6: Final answer
    x = 64,895.10

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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.