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Finding the Fourth Proportional to 71,313.70, 106,992.93 and 42,883.38

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Solution

The fourth proportional to 71,313.70, 106,992.93 and 42,883.38 is: 64,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,313.70 : 106,992.93 = 42,883.38 : x
  2. Step 2: Convert to fraction form
    71,313.70/106,992.93 = 42,883.38/x
  3. Step 3: Cross multiply
    71,313.70x = 106,992.93 × 42,883.38
  4. Step 4: Simplify right side
    71,313.70x = 4,588,218,474.50
  5. Step 5: Solve for x
    x = 4,588,218,474.50/71,313.70
  6. Step 6: Final answer
    x = 64,338.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.