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Finding the Fourth Proportional to 67,392.34, 92,971.36 and 39,081.62

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Solution

The fourth proportional to 67,392.34, 92,971.36 and 39,081.62 is: 53,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,392.34 : 92,971.36 = 39,081.62 : x
  2. Step 2: Convert to fraction form
    67,392.34/92,971.36 = 39,081.62/x
  3. Step 3: Cross multiply
    67,392.34x = 92,971.36 × 39,081.62
  4. Step 4: Simplify right side
    67,392.34x = 3,633,471,362.40
  5. Step 5: Solve for x
    x = 3,633,471,362.40/67,392.34
  6. Step 6: Final answer
    x = 53,915.20

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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.