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Finding the Fourth Proportional to 68,893.40, 95,069.79 and 38,678.18

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Solution

The fourth proportional to 68,893.40, 95,069.79 and 38,678.18 is: 53,374.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,893.40 : 95,069.79 = 38,678.18 : x
  2. Step 2: Convert to fraction form
    68,893.40/95,069.79 = 38,678.18/x
  3. Step 3: Cross multiply
    68,893.40x = 95,069.79 × 38,678.18
  4. Step 4: Simplify right side
    68,893.40x = 3,677,125,974.83
  5. Step 5: Solve for x
    x = 3,677,125,974.83/68,893.40
  6. Step 6: Final answer
    x = 53,374.14

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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.