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Finding the Fourth Proportional to 68,807.52, 94,951.17 and 40,507.74

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Solution

The fourth proportional to 68,807.52, 94,951.17 and 40,507.74 is: 55,898.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,807.52 : 94,951.17 = 40,507.74 : x
  2. Step 2: Convert to fraction form
    68,807.52/94,951.17 = 40,507.74/x
  3. Step 3: Cross multiply
    68,807.52x = 94,951.17 × 40,507.74
  4. Step 4: Simplify right side
    68,807.52x = 3,846,257,307.06
  5. Step 5: Solve for x
    x = 3,846,257,307.06/68,807.52
  6. Step 6: Final answer
    x = 55,898.79

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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.