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Finding the Fourth Proportional to 68,705.36, 94,821.04 and 38,495.60

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Solution

The fourth proportional to 68,705.36, 94,821.04 and 38,495.60 is: 53,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,705.36 : 94,821.04 = 38,495.60 : x
  2. Step 2: Convert to fraction form
    68,705.36/94,821.04 = 38,495.60/x
  3. Step 3: Cross multiply
    68,705.36x = 94,821.04 × 38,495.60
  4. Step 4: Simplify right side
    68,705.36x = 3,650,192,827.42
  5. Step 5: Solve for x
    x = 3,650,192,827.42/68,705.36
  6. Step 6: Final answer
    x = 53,128.21

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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.