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Finding the Fourth Proportional to 68,702.84, 94,809.04 and 38,487.61

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Solution

The fourth proportional to 68,702.84, 94,809.04 and 38,487.61 is: 53,112.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,702.84 : 94,809.04 = 38,487.61 : x
  2. Step 2: Convert to fraction form
    68,702.84/94,809.04 = 38,487.61/x
  3. Step 3: Cross multiply
    68,702.84x = 94,809.04 × 38,487.61
  4. Step 4: Simplify right side
    68,702.84x = 3,648,973,022.75
  5. Step 5: Solve for x
    x = 3,648,973,022.75/68,702.84
  6. Step 6: Final answer
    x = 53,112.41

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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.