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Finding the Fourth Proportional to 67,965.80, 93,801.14 and 39,680.60

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Solution

The fourth proportional to 67,965.80, 93,801.14 and 39,680.60 is: 54,764.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,965.80 : 93,801.14 = 39,680.60 : x
  2. Step 2: Convert to fraction form
    67,965.80/93,801.14 = 39,680.60/x
  3. Step 3: Cross multiply
    67,965.80x = 93,801.14 × 39,680.60
  4. Step 4: Simplify right side
    67,965.80x = 3,722,085,515.88
  5. Step 5: Solve for x
    x = 3,722,085,515.88/67,965.80
  6. Step 6: Final answer
    x = 54,764.09

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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.