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Finding the Fourth Proportional to 85,008.66, 127,396.34 and 53,788.02

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Solution

The fourth proportional to 85,008.66, 127,396.34 and 53,788.02 is: 80,608.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,008.66 : 127,396.34 = 53,788.02 : x
  2. Step 2: Convert to fraction form
    85,008.66/127,396.34 = 53,788.02/x
  3. Step 3: Cross multiply
    85,008.66x = 127,396.34 × 53,788.02
  4. Step 4: Simplify right side
    85,008.66x = 6,852,396,883.85
  5. Step 5: Solve for x
    x = 6,852,396,883.85/85,008.66
  6. Step 6: Final answer
    x = 80,608.22

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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.