Home / 68,109.57-102,181.64-21,362.85

Finding the Fourth Proportional to 68,109.57, 102,181.64 and 21,362.85

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Solution

The fourth proportional to 68,109.57, 102,181.64 and 21,362.85 is: 32,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,109.57 : 102,181.64 = 21,362.85 : x
  2. Step 2: Convert to fraction form
    68,109.57/102,181.64 = 21,362.85/x
  3. Step 3: Cross multiply
    68,109.57x = 102,181.64 × 21,362.85
  4. Step 4: Simplify right side
    68,109.57x = 2,182,890,941.26
  5. Step 5: Solve for x
    x = 2,182,890,941.26/68,109.57
  6. Step 6: Final answer
    x = 32,049.69

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1.5x scale

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.