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Finding the Fourth Proportional to 67,704.63, 93,431.75 and 39,013.75

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Solution

The fourth proportional to 67,704.63, 93,431.75 and 39,013.75 is: 53,838.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,704.63 : 93,431.75 = 39,013.75 : x
  2. Step 2: Convert to fraction form
    67,704.63/93,431.75 = 39,013.75/x
  3. Step 3: Cross multiply
    67,704.63x = 93,431.75 × 39,013.75
  4. Step 4: Simplify right side
    67,704.63x = 3,645,122,858.28
  5. Step 5: Solve for x
    x = 3,645,122,858.28/67,704.63
  6. Step 6: Final answer
    x = 53,838.61

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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.