Home / 68,636.08-102,932.20-21,878

Finding the Fourth Proportional to 68,636.08, 102,932.20 and 21,878

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Solution

The fourth proportional to 68,636.08, 102,932.20 and 21,878 is: 32,810.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,636.08 : 102,932.20 = 21,878 : x
  2. Step 2: Convert to fraction form
    68,636.08/102,932.20 = 21,878/x
  3. Step 3: Cross multiply
    68,636.08x = 102,932.20 × 21,878
  4. Step 4: Simplify right side
    68,636.08x = 2,251,950,671.60
  5. Step 5: Solve for x
    x = 2,251,950,671.60/68,636.08
  6. Step 6: Final answer
    x = 32,810.01

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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.