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Finding the Fourth Proportional to 68,658, 94,749.48 and 38,850

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Solution

The fourth proportional to 68,658, 94,749.48 and 38,850 is: 53,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,658 : 94,749.48 = 38,850 : x
  2. Step 2: Convert to fraction form
    68,658/94,749.48 = 38,850/x
  3. Step 3: Cross multiply
    68,658x = 94,749.48 × 38,850
  4. Step 4: Simplify right side
    68,658x = 3,681,017,298
  5. Step 5: Solve for x
    x = 3,681,017,298/68,658
  6. Step 6: Final answer
    x = 53,613.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.