Home / 68,127.85-102,179.62-20,731.47

Finding the Fourth Proportional to 68,127.85, 102,179.62 and 20,731.47

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Solution

The fourth proportional to 68,127.85, 102,179.62 and 20,731.47 is: 31,093.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,127.85 : 102,179.62 = 20,731.47 : x
  2. Step 2: Convert to fraction form
    68,127.85/102,179.62 = 20,731.47/x
  3. Step 3: Cross multiply
    68,127.85x = 102,179.62 × 20,731.47
  4. Step 4: Simplify right side
    68,127.85x = 2,118,333,726.64
  5. Step 5: Solve for x
    x = 2,118,333,726.64/68,127.85
  6. Step 6: Final answer
    x = 31,093.51

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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.