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Finding the Fourth Proportional to 35,267.38, 48,670.80 and 21,128.42

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Solution

The fourth proportional to 35,267.38, 48,670.80 and 21,128.42 is: 29,158.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,267.38 : 48,670.80 = 21,128.42 : x
  2. Step 2: Convert to fraction form
    35,267.38/48,670.80 = 21,128.42/x
  3. Step 3: Cross multiply
    35,267.38x = 48,670.80 × 21,128.42
  4. Step 4: Simplify right side
    35,267.38x = 1,028,337,104.14
  5. Step 5: Solve for x
    x = 1,028,337,104.14/35,267.38
  6. Step 6: Final answer
    x = 29,158.31

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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.