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Finding the Fourth Proportional to 68,713.62, 94,782.88 and 45,429.96

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Solution

The fourth proportional to 68,713.62, 94,782.88 and 45,429.96 is: 62,665.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.62 : 94,782.88 = 45,429.96 : x
  2. Step 2: Convert to fraction form
    68,713.62/94,782.88 = 45,429.96/x
  3. Step 3: Cross multiply
    68,713.62x = 94,782.88 × 45,429.96
  4. Step 4: Simplify right side
    68,713.62x = 4,305,982,603.76
  5. Step 5: Solve for x
    x = 4,305,982,603.76/68,713.62
  6. Step 6: Final answer
    x = 62,665.64

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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.