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Finding the Fourth Proportional to 35,320.99, 48,743.10 and 20,213.90

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Solution

The fourth proportional to 35,320.99, 48,743.10 and 20,213.90 is: 27,895.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,320.99 : 48,743.10 = 20,213.90 : x
  2. Step 2: Convert to fraction form
    35,320.99/48,743.10 = 20,213.90/x
  3. Step 3: Cross multiply
    35,320.99x = 48,743.10 × 20,213.90
  4. Step 4: Simplify right side
    35,320.99x = 985,288,370.51
  5. Step 5: Solve for x
    x = 985,288,370.51/35,320.99
  6. Step 6: Final answer
    x = 27,895.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.