Home / 87,002.80-120,063.76-49,284.32

Finding the Fourth Proportional to 87,002.80, 120,063.76 and 49,284.32

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Solution

The fourth proportional to 87,002.80, 120,063.76 and 49,284.32 is: 68,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,002.80 : 120,063.76 = 49,284.32 : x
  2. Step 2: Convert to fraction form
    87,002.80/120,063.76 = 49,284.32/x
  3. Step 3: Cross multiply
    87,002.80x = 120,063.76 × 49,284.32
  4. Step 4: Simplify right side
    87,002.80x = 5,917,260,768.24
  5. Step 5: Solve for x
    x = 5,917,260,768.24/87,002.80
  6. Step 6: Final answer
    x = 68,012.30

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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.