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Finding the Fourth Proportional to 40,302.99, 60,431.11 and 13,640.12

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Solution

The fourth proportional to 40,302.99, 60,431.11 and 13,640.12 is: 20,452.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,302.99 : 60,431.11 = 13,640.12 : x
  2. Step 2: Convert to fraction form
    40,302.99/60,431.11 = 13,640.12/x
  3. Step 3: Cross multiply
    40,302.99x = 60,431.11 × 13,640.12
  4. Step 4: Simplify right side
    40,302.99x = 824,287,221.78
  5. Step 5: Solve for x
    x = 824,287,221.78/40,302.99
  6. Step 6: Final answer
    x = 20,452.26

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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.