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Finding the Fourth Proportional to 35,290.98, 48,697.97 and 21,143.46

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Solution

The fourth proportional to 35,290.98, 48,697.97 and 21,143.46 is: 29,175.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,290.98 : 48,697.97 = 21,143.46 : x
  2. Step 2: Convert to fraction form
    35,290.98/48,697.97 = 21,143.46/x
  3. Step 3: Cross multiply
    35,290.98x = 48,697.97 × 21,143.46
  4. Step 4: Simplify right side
    35,290.98x = 1,029,643,580.78
  5. Step 5: Solve for x
    x = 1,029,643,580.78/35,290.98
  6. Step 6: Final answer
    x = 29,175.83

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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.