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Finding the Fourth Proportional to 70,553.28, 97,348.32 and 40,728

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Solution

The fourth proportional to 70,553.28, 97,348.32 and 40,728 is: 56,195.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,553.28 : 97,348.32 = 40,728 : x
  2. Step 2: Convert to fraction form
    70,553.28/97,348.32 = 40,728/x
  3. Step 3: Cross multiply
    70,553.28x = 97,348.32 × 40,728
  4. Step 4: Simplify right side
    70,553.28x = 3,964,802,376.96
  5. Step 5: Solve for x
    x = 3,964,802,376.96/70,553.28
  6. Step 6: Final answer
    x = 56,195.86

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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.