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Finding the Fourth Proportional to 67,800.96, 93,568.11 and 39,129.39

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Solution

The fourth proportional to 67,800.96, 93,568.11 and 39,129.39 is: 54,000.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,800.96 : 93,568.11 = 39,129.39 : x
  2. Step 2: Convert to fraction form
    67,800.96/93,568.11 = 39,129.39/x
  3. Step 3: Cross multiply
    67,800.96x = 93,568.11 × 39,129.39
  4. Step 4: Simplify right side
    67,800.96x = 3,661,263,067.75
  5. Step 5: Solve for x
    x = 3,661,263,067.75/67,800.96
  6. Step 6: Final answer
    x = 54,000.17

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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.