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Finding the Fourth Proportional to 70,249.47, 96,945.69 and 38,420.42

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Solution

The fourth proportional to 70,249.47, 96,945.69 and 38,420.42 is: 53,020.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,249.47 : 96,945.69 = 38,420.42 : x
  2. Step 2: Convert to fraction form
    70,249.47/96,945.69 = 38,420.42/x
  3. Step 3: Cross multiply
    70,249.47x = 96,945.69 × 38,420.42
  4. Step 4: Simplify right side
    70,249.47x = 3,724,694,126.99
  5. Step 5: Solve for x
    x = 3,724,694,126.99/70,249.47
  6. Step 6: Final answer
    x = 53,020.96

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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.