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Finding the Fourth Proportional to 68,118.76, 94,016.89 and 45,108.01

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Solution

The fourth proportional to 68,118.76, 94,016.89 and 45,108.01 is: 62,257.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,118.76 : 94,016.89 = 45,108.01 : x
  2. Step 2: Convert to fraction form
    68,118.76/94,016.89 = 45,108.01/x
  3. Step 3: Cross multiply
    68,118.76x = 94,016.89 × 45,108.01
  4. Step 4: Simplify right side
    68,118.76x = 4,240,914,988.20
  5. Step 5: Solve for x
    x = 4,240,914,988.20/68,118.76
  6. Step 6: Final answer
    x = 62,257.66

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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.