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Finding the Fourth Proportional to 62,754, 94,142.60 and 20,636.40

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Solution

The fourth proportional to 62,754, 94,142.60 and 20,636.40 is: 30,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,754 : 94,142.60 = 20,636.40 : x
  2. Step 2: Convert to fraction form
    62,754/94,142.60 = 20,636.40/x
  3. Step 3: Cross multiply
    62,754x = 94,142.60 × 20,636.40
  4. Step 4: Simplify right side
    62,754x = 1,942,764,350.64
  5. Step 5: Solve for x
    x = 1,942,764,350.64/62,754
  6. Step 6: Final answer
    x = 30,958.41

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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.