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Finding the Fourth Proportional to 85,083.60, 127,620.73 and 25,914.31

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Solution

The fourth proportional to 85,083.60, 127,620.73 and 25,914.31 is: 38,870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,083.60 : 127,620.73 = 25,914.31 : x
  2. Step 2: Convert to fraction form
    85,083.60/127,620.73 = 25,914.31/x
  3. Step 3: Cross multiply
    85,083.60x = 127,620.73 × 25,914.31
  4. Step 4: Simplify right side
    85,083.60x = 3,307,203,159.65
  5. Step 5: Solve for x
    x = 3,307,203,159.65/85,083.60
  6. Step 6: Final answer
    x = 38,870.04

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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.