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Finding the Fourth Proportional to 68,852.58, 95,020.74 and 38,640.42

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Solution

The fourth proportional to 68,852.58, 95,020.74 and 38,640.42 is: 53,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,852.58 : 95,020.74 = 38,640.42 : x
  2. Step 2: Convert to fraction form
    68,852.58/95,020.74 = 38,640.42/x
  3. Step 3: Cross multiply
    68,852.58x = 95,020.74 × 38,640.42
  4. Step 4: Simplify right side
    68,852.58x = 3,671,641,302.31
  5. Step 5: Solve for x
    x = 3,671,641,302.31/68,852.58
  6. Step 6: Final answer
    x = 53,326.13

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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.