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Finding the Fourth Proportional to 85,136.82, 127,712.52 and 35,207.34

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Solution

The fourth proportional to 85,136.82, 127,712.52 and 35,207.34 is: 52,814.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,136.82 : 127,712.52 = 35,207.34 : x
  2. Step 2: Convert to fraction form
    85,136.82/127,712.52 = 35,207.34/x
  3. Step 3: Cross multiply
    85,136.82x = 127,712.52 × 35,207.34
  4. Step 4: Simplify right side
    85,136.82x = 4,496,418,113.90
  5. Step 5: Solve for x
    x = 4,496,418,113.90/85,136.82
  6. Step 6: Final answer
    x = 52,814.02

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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.