Home / 87,299.88-130,970.78-28,141.16

Finding the Fourth Proportional to 87,299.88, 130,970.78 and 28,141.16

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Solution

The fourth proportional to 87,299.88, 130,970.78 and 28,141.16 is: 42,218.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,299.88 : 130,970.78 = 28,141.16 : x
  2. Step 2: Convert to fraction form
    87,299.88/130,970.78 = 28,141.16/x
  3. Step 3: Cross multiply
    87,299.88x = 130,970.78 × 28,141.16
  4. Step 4: Simplify right side
    87,299.88x = 3,685,669,675.30
  5. Step 5: Solve for x
    x = 3,685,669,675.30/87,299.88
  6. Step 6: Final answer
    x = 42,218.50

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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.