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Finding the Fourth Proportional to 68,078.80, 102,011.54 and 43,066.04

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Solution

The fourth proportional to 68,078.80, 102,011.54 and 43,066.04 is: 64,531.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,078.80 : 102,011.54 = 43,066.04 : x
  2. Step 2: Convert to fraction form
    68,078.80/102,011.54 = 43,066.04/x
  3. Step 3: Cross multiply
    68,078.80x = 102,011.54 × 43,066.04
  4. Step 4: Simplify right side
    68,078.80x = 4,393,233,062.10
  5. Step 5: Solve for x
    x = 4,393,233,062.10/68,078.80
  6. Step 6: Final answer
    x = 64,531.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.