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Finding the Fourth Proportional to 67,238.01, 100,856.31 and 17,317.90

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Solution

The fourth proportional to 67,238.01, 100,856.31 and 17,317.90 is: 25,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,238.01 : 100,856.31 = 17,317.90 : x
  2. Step 2: Convert to fraction form
    67,238.01/100,856.31 = 17,317.90/x
  3. Step 3: Cross multiply
    67,238.01x = 100,856.31 × 17,317.90
  4. Step 4: Simplify right side
    67,238.01x = 1,746,619,490.95
  5. Step 5: Solve for x
    x = 1,746,619,490.95/67,238.01
  6. Step 6: Final answer
    x = 25,976.67

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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.