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Finding the Fourth Proportional to 65,689.46, 89,994.89 and 63,229.44

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Solution

The fourth proportional to 65,689.46, 89,994.89 and 63,229.44 is: 86,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,689.46 : 89,994.89 = 63,229.44 : x
  2. Step 2: Convert to fraction form
    65,689.46/89,994.89 = 63,229.44/x
  3. Step 3: Cross multiply
    65,689.46x = 89,994.89 × 63,229.44
  4. Step 4: Simplify right side
    65,689.46x = 5,690,326,181.41
  5. Step 5: Solve for x
    x = 5,690,326,181.41/65,689.46
  6. Step 6: Final answer
    x = 86,624.65

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1.5x scale

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.