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Finding the Fourth Proportional to 68,432.40, 93,750.82 and 65,873.87

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Solution

The fourth proportional to 68,432.40, 93,750.82 and 65,873.87 is: 90,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,432.40 : 93,750.82 = 65,873.87 : x
  2. Step 2: Convert to fraction form
    68,432.40/93,750.82 = 65,873.87/x
  3. Step 3: Cross multiply
    68,432.40x = 93,750.82 × 65,873.87
  4. Step 4: Simplify right side
    68,432.40x = 6,175,729,662.42
  5. Step 5: Solve for x
    x = 6,175,729,662.42/68,432.40
  6. Step 6: Final answer
    x = 90,245.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.