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Finding the Fourth Proportional to 40,513.70, 60,791.88 and 20,792.24

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Solution

The fourth proportional to 40,513.70, 60,791.88 and 20,792.24 is: 31,199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,513.70 : 60,791.88 = 20,792.24 : x
  2. Step 2: Convert to fraction form
    40,513.70/60,791.88 = 20,792.24/x
  3. Step 3: Cross multiply
    40,513.70x = 60,791.88 × 20,792.24
  4. Step 4: Simplify right side
    40,513.70x = 1,263,999,359.01
  5. Step 5: Solve for x
    x = 1,263,999,359.01/40,513.70
  6. Step 6: Final answer
    x = 31,199.31

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1.5x scale

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.