Home / 68,642.91-102,966.18-21,895.78

Finding the Fourth Proportional to 68,642.91, 102,966.18 and 21,895.78

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Solution

The fourth proportional to 68,642.91, 102,966.18 and 21,895.78 is: 32,844.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,642.91 : 102,966.18 = 21,895.78 : x
  2. Step 2: Convert to fraction form
    68,642.91/102,966.18 = 21,895.78/x
  3. Step 3: Cross multiply
    68,642.91x = 102,966.18 × 21,895.78
  4. Step 4: Simplify right side
    68,642.91x = 2,254,524,824.72
  5. Step 5: Solve for x
    x = 2,254,524,824.72/68,642.91
  6. Step 6: Final answer
    x = 32,844.25

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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.