Home / 87,355.78-131,064.41-43,013.68

Finding the Fourth Proportional to 87,355.78, 131,064.41 and 43,013.68

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Solution

The fourth proportional to 87,355.78, 131,064.41 and 43,013.68 is: 64,535.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,355.78 : 131,064.41 = 43,013.68 : x
  2. Step 2: Convert to fraction form
    87,355.78/131,064.41 = 43,013.68/x
  3. Step 3: Cross multiply
    87,355.78x = 131,064.41 × 43,013.68
  4. Step 4: Simplify right side
    87,355.78x = 5,637,562,591.13
  5. Step 5: Solve for x
    x = 5,637,562,591.13/87,355.78
  6. Step 6: Final answer
    x = 64,535.66

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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.