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Finding the Fourth Proportional to 85,504.52, 128,282.70 and 41,118.68

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Solution

The fourth proportional to 85,504.52, 128,282.70 and 41,118.68 is: 61,690.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,504.52 : 128,282.70 = 41,118.68 : x
  2. Step 2: Convert to fraction form
    85,504.52/128,282.70 = 41,118.68/x
  3. Step 3: Cross multiply
    85,504.52x = 128,282.70 × 41,118.68
  4. Step 4: Simplify right side
    85,504.52x = 5,274,815,290.84
  5. Step 5: Solve for x
    x = 5,274,815,290.84/85,504.52
  6. Step 6: Final answer
    x = 61,690.48

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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.