Home / 87,021.94-120,112.06-53,468.50

Finding the Fourth Proportional to 87,021.94, 120,112.06 and 53,468.50

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Solution

The fourth proportional to 87,021.94, 120,112.06 and 53,468.50 is: 73,799.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,021.94 : 120,112.06 = 53,468.50 : x
  2. Step 2: Convert to fraction form
    87,021.94/120,112.06 = 53,468.50/x
  3. Step 3: Cross multiply
    87,021.94x = 120,112.06 × 53,468.50
  4. Step 4: Simplify right side
    87,021.94x = 6,422,211,680.11
  5. Step 5: Solve for x
    x = 6,422,211,680.11/87,021.94
  6. Step 6: Final answer
    x = 73,799.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.