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Finding the Fourth Proportional to 67,390.34, 92,968.61 and 39,079.62

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Solution

The fourth proportional to 67,390.34, 92,968.61 and 39,079.62 is: 53,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.34 : 92,968.61 = 39,079.62 : x
  2. Step 2: Convert to fraction form
    67,390.34/92,968.61 = 39,079.62/x
  3. Step 3: Cross multiply
    67,390.34x = 92,968.61 × 39,079.62
  4. Step 4: Simplify right side
    67,390.34x = 3,633,177,755.33
  5. Step 5: Solve for x
    x = 3,633,177,755.33/67,390.34
  6. Step 6: Final answer
    x = 53,912.45

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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.