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Finding the Fourth Proportional to 55,511.80, 76,609.12 and 32,863.80

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Solution

The fourth proportional to 55,511.80, 76,609.12 and 32,863.80 is: 45,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,511.80 : 76,609.12 = 32,863.80 : x
  2. Step 2: Convert to fraction form
    55,511.80/76,609.12 = 32,863.80/x
  3. Step 3: Cross multiply
    55,511.80x = 76,609.12 × 32,863.80
  4. Step 4: Simplify right side
    55,511.80x = 2,517,666,797.86
  5. Step 5: Solve for x
    x = 2,517,666,797.86/55,511.80
  6. Step 6: Final answer
    x = 45,353.72

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1.5x scale

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.