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Finding the Fourth Proportional to 68,902.34, 95,090.74 and 38,689.67

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Solution

The fourth proportional to 68,902.34, 95,090.74 and 38,689.67 is: 53,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,902.34 : 95,090.74 = 38,689.67 : x
  2. Step 2: Convert to fraction form
    68,902.34/95,090.74 = 38,689.67/x
  3. Step 3: Cross multiply
    68,902.34x = 95,090.74 × 38,689.67
  4. Step 4: Simplify right side
    68,902.34x = 3,679,028,778.48
  5. Step 5: Solve for x
    x = 3,679,028,778.48/68,902.34
  6. Step 6: Final answer
    x = 53,394.83

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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.