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Finding the Fourth Proportional to 68,941.34, 95,133.86 and 38,720.76

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Solution

The fourth proportional to 68,941.34, 95,133.86 and 38,720.76 is: 53,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,941.34 : 95,133.86 = 38,720.76 : x
  2. Step 2: Convert to fraction form
    68,941.34/95,133.86 = 38,720.76/x
  3. Step 3: Cross multiply
    68,941.34x = 95,133.86 × 38,720.76
  4. Step 4: Simplify right side
    68,941.34x = 3,683,654,788.46
  5. Step 5: Solve for x
    x = 3,683,654,788.46/68,941.34
  6. Step 6: Final answer
    x = 53,431.73

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1.5x scale

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.