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Finding the Fourth Proportional to 68,749.56, 103,220.12 and 35,493.59

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Solution

The fourth proportional to 68,749.56, 103,220.12 and 35,493.59 is: 53,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,749.56 : 103,220.12 = 35,493.59 : x
  2. Step 2: Convert to fraction form
    68,749.56/103,220.12 = 35,493.59/x
  3. Step 3: Cross multiply
    68,749.56x = 103,220.12 × 35,493.59
  4. Step 4: Simplify right side
    68,749.56x = 3,663,652,965.82
  5. Step 5: Solve for x
    x = 3,663,652,965.82/68,749.56
  6. Step 6: Final answer
    x = 53,289.84

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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.