Home / 67,169.15-100,718.94-19,778.07

Finding the Fourth Proportional to 67,169.15, 100,718.94 and 19,778.07

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Solution

The fourth proportional to 67,169.15, 100,718.94 and 19,778.07 is: 29,656.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,169.15 : 100,718.94 = 19,778.07 : x
  2. Step 2: Convert to fraction form
    67,169.15/100,718.94 = 19,778.07/x
  3. Step 3: Cross multiply
    67,169.15x = 100,718.94 × 19,778.07
  4. Step 4: Simplify right side
    67,169.15x = 1,992,026,697.51
  5. Step 5: Solve for x
    x = 1,992,026,697.51/67,169.15
  6. Step 6: Final answer
    x = 29,656.87

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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.