Home / 68,394.14-102,557.28-20,997.86

Finding the Fourth Proportional to 68,394.14, 102,557.28 and 20,997.86

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Solution

The fourth proportional to 68,394.14, 102,557.28 and 20,997.86 is: 31,486.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,394.14 : 102,557.28 = 20,997.86 : x
  2. Step 2: Convert to fraction form
    68,394.14/102,557.28 = 20,997.86/x
  3. Step 3: Cross multiply
    68,394.14x = 102,557.28 × 20,997.86
  4. Step 4: Simplify right side
    68,394.14x = 2,153,483,407.42
  5. Step 5: Solve for x
    x = 2,153,483,407.42/68,394.14
  6. Step 6: Final answer
    x = 31,486.37

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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.