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Finding the Fourth Proportional to 70,772.99, 97,667.40 and 38,942.57

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Solution

The fourth proportional to 70,772.99, 97,667.40 and 38,942.57 is: 53,741.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,772.99 : 97,667.40 = 38,942.57 : x
  2. Step 2: Convert to fraction form
    70,772.99/97,667.40 = 38,942.57/x
  3. Step 3: Cross multiply
    70,772.99x = 97,667.40 × 38,942.57
  4. Step 4: Simplify right side
    70,772.99x = 3,803,419,072.88
  5. Step 5: Solve for x
    x = 3,803,419,072.88/70,772.99
  6. Step 6: Final answer
    x = 53,741.11

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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.