Home / 87,521.69-120,780.65-49,798.37

Finding the Fourth Proportional to 87,521.69, 120,780.65 and 49,798.37

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Solution

The fourth proportional to 87,521.69, 120,780.65 and 49,798.37 is: 68,722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,521.69 : 120,780.65 = 49,798.37 : x
  2. Step 2: Convert to fraction form
    87,521.69/120,780.65 = 49,798.37/x
  3. Step 3: Cross multiply
    87,521.69x = 120,780.65 × 49,798.37
  4. Step 4: Simplify right side
    87,521.69x = 6,014,679,497.54
  5. Step 5: Solve for x
    x = 6,014,679,497.54/87,521.69
  6. Step 6: Final answer
    x = 68,722.16

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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.