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Finding the Fourth Proportional to 73,681.67, 101,680.70 and 40,147.67

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Solution

The fourth proportional to 73,681.67, 101,680.70 and 40,147.67 is: 55,403.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,681.67 : 101,680.70 = 40,147.67 : x
  2. Step 2: Convert to fraction form
    73,681.67/101,680.70 = 40,147.67/x
  3. Step 3: Cross multiply
    73,681.67x = 101,680.70 × 40,147.67
  4. Step 4: Simplify right side
    73,681.67x = 4,082,243,543.54
  5. Step 5: Solve for x
    x = 4,082,243,543.54/73,681.67
  6. Step 6: Final answer
    x = 55,403.79

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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.