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Finding the Fourth Proportional to 70,972.92, 97,940.88 and 39,141.18

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Solution

The fourth proportional to 70,972.92, 97,940.88 and 39,141.18 is: 54,013.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,972.92 : 97,940.88 = 39,141.18 : x
  2. Step 2: Convert to fraction form
    70,972.92/97,940.88 = 39,141.18/x
  3. Step 3: Cross multiply
    70,972.92x = 97,940.88 × 39,141.18
  4. Step 4: Simplify right side
    70,972.92x = 3,833,521,613.44
  5. Step 5: Solve for x
    x = 3,833,521,613.44/70,972.92
  6. Step 6: Final answer
    x = 54,013.86

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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.