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Finding the Fourth Proportional to 87,338.88, 120,530.88 and 49,619.52

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Solution

The fourth proportional to 87,338.88, 120,530.88 and 49,619.52 is: 68,476.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,338.88 : 120,530.88 = 49,619.52 : x
  2. Step 2: Convert to fraction form
    87,338.88/120,530.88 = 49,619.52/x
  3. Step 3: Cross multiply
    87,338.88x = 120,530.88 × 49,619.52
  4. Step 4: Simplify right side
    87,338.88x = 5,980,684,410.78
  5. Step 5: Solve for x
    x = 5,980,684,410.78/87,338.88
  6. Step 6: Final answer
    x = 68,476.77

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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.