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Finding the Fourth Proportional to 40,630.30, 60,921.15 and 20,947.30

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Solution

The fourth proportional to 40,630.30, 60,921.15 and 20,947.30 is: 31,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,630.30 : 60,921.15 = 20,947.30 : x
  2. Step 2: Convert to fraction form
    40,630.30/60,921.15 = 20,947.30/x
  3. Step 3: Cross multiply
    40,630.30x = 60,921.15 × 20,947.30
  4. Step 4: Simplify right side
    40,630.30x = 1,276,133,605.40
  5. Step 5: Solve for x
    x = 1,276,133,605.40/40,630.30
  6. Step 6: Final answer
    x = 31,408.42

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