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Finding the Fourth Proportional to 70,850.81, 97,769.68 and 39,019.71

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Solution

The fourth proportional to 70,850.81, 97,769.68 and 39,019.71 is: 53,844.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,850.81 : 97,769.68 = 39,019.71 : x
  2. Step 2: Convert to fraction form
    70,850.81/97,769.68 = 39,019.71/x
  3. Step 3: Cross multiply
    70,850.81x = 97,769.68 × 39,019.71
  4. Step 4: Simplify right side
    70,850.81x = 3,814,944,560.39
  5. Step 5: Solve for x
    x = 3,814,944,560.39/70,850.81
  6. Step 6: Final answer
    x = 53,844.76

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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.