Home / 87,131.92-130,709.98-27,985.72

Finding the Fourth Proportional to 87,131.92, 130,709.98 and 27,985.72

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Solution

The fourth proportional to 87,131.92, 130,709.98 and 27,985.72 is: 41,982.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,131.92 : 130,709.98 = 27,985.72 : x
  2. Step 2: Convert to fraction form
    87,131.92/130,709.98 = 27,985.72/x
  3. Step 3: Cross multiply
    87,131.92x = 130,709.98 × 27,985.72
  4. Step 4: Simplify right side
    87,131.92x = 3,658,012,901.49
  5. Step 5: Solve for x
    x = 3,658,012,901.49/87,131.92
  6. Step 6: Final answer
    x = 41,982.47

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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.