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Finding the Fourth Proportional to 68,971.44, 95,191.68 and 64,469

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Solution

The fourth proportional to 68,971.44, 95,191.68 and 64,469 is: 88,977.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,971.44 : 95,191.68 = 64,469 : x
  2. Step 2: Convert to fraction form
    68,971.44/95,191.68 = 64,469/x
  3. Step 3: Cross multiply
    68,971.44x = 95,191.68 × 64,469
  4. Step 4: Simplify right side
    68,971.44x = 6,136,912,417.92
  5. Step 5: Solve for x
    x = 6,136,912,417.92/68,971.44
  6. Step 6: Final answer
    x = 88,977.59

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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.