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Finding the Fourth Proportional to 85,767.99, 128,702.56 and 35,844.25

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Solution

The fourth proportional to 85,767.99, 128,702.56 and 35,844.25 is: 53,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,767.99 : 128,702.56 = 35,844.25 : x
  2. Step 2: Convert to fraction form
    85,767.99/128,702.56 = 35,844.25/x
  3. Step 3: Cross multiply
    85,767.99x = 128,702.56 × 35,844.25
  4. Step 4: Simplify right side
    85,767.99x = 4,613,246,221.06
  5. Step 5: Solve for x
    x = 4,613,246,221.06/85,767.99
  6. Step 6: Final answer
    x = 53,787.51

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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.