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Finding the Fourth Proportional to 57,745.92, 86,621.93 and 18,306.11

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Solution

The fourth proportional to 57,745.92, 86,621.93 and 18,306.11 is: 27,460.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,745.92 : 86,621.93 = 18,306.11 : x
  2. Step 2: Convert to fraction form
    57,745.92/86,621.93 = 18,306.11/x
  3. Step 3: Cross multiply
    57,745.92x = 86,621.93 × 18,306.11
  4. Step 4: Simplify right side
    57,745.92x = 1,585,710,100.12
  5. Step 5: Solve for x
    x = 1,585,710,100.12/57,745.92
  6. Step 6: Final answer
    x = 27,460.13

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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.