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Finding the Fourth Proportional to 35,310.25, 48,732.47 and 20,406.25

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Solution

The fourth proportional to 35,310.25, 48,732.47 and 20,406.25 is: 28,163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,310.25 : 48,732.47 = 20,406.25 : x
  2. Step 2: Convert to fraction form
    35,310.25/48,732.47 = 20,406.25/x
  3. Step 3: Cross multiply
    35,310.25x = 48,732.47 × 20,406.25
  4. Step 4: Simplify right side
    35,310.25x = 994,446,965.94
  5. Step 5: Solve for x
    x = 994,446,965.94/35,310.25
  6. Step 6: Final answer
    x = 28,163.12

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1.5x scale

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.