Home / 87,387.90-131,094.81-28,212.54

Finding the Fourth Proportional to 87,387.90, 131,094.81 and 28,212.54

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Solution

The fourth proportional to 87,387.90, 131,094.81 and 28,212.54 is: 42,322.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,387.90 : 131,094.81 = 28,212.54 : x
  2. Step 2: Convert to fraction form
    87,387.90/131,094.81 = 28,212.54/x
  3. Step 3: Cross multiply
    87,387.90x = 131,094.81 × 28,212.54
  4. Step 4: Simplify right side
    87,387.90x = 3,698,517,570.92
  5. Step 5: Solve for x
    x = 3,698,517,570.92/87,387.90
  6. Step 6: Final answer
    x = 42,322.99

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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.