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Finding the Fourth Proportional to 70,949.49, 97,906.01 and 40,728.21

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Solution

The fourth proportional to 70,949.49, 97,906.01 and 40,728.21 is: 56,202.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,949.49 : 97,906.01 = 40,728.21 : x
  2. Step 2: Convert to fraction form
    70,949.49/97,906.01 = 40,728.21/x
  3. Step 3: Cross multiply
    70,949.49x = 97,906.01 × 40,728.21
  4. Step 4: Simplify right side
    70,949.49x = 3,987,536,535.54
  5. Step 5: Solve for x
    x = 3,987,536,535.54/70,949.49
  6. Step 6: Final answer
    x = 56,202.47

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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.