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Finding the Fourth Proportional to 85,051.73, 127,554.80 and 25,871.51

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Solution

The fourth proportional to 85,051.73, 127,554.80 and 25,871.51 is: 38,800.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,051.73 : 127,554.80 = 25,871.51 : x
  2. Step 2: Convert to fraction form
    85,051.73/127,554.80 = 25,871.51/x
  3. Step 3: Cross multiply
    85,051.73x = 127,554.80 × 25,871.51
  4. Step 4: Simplify right side
    85,051.73x = 3,300,034,516.62
  5. Step 5: Solve for x
    x = 3,300,034,516.62/85,051.73
  6. Step 6: Final answer
    x = 38,800.32

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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.