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Finding the Fourth Proportional to 57,487.51, 86,249.49 and 18,048.61

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Solution

The fourth proportional to 57,487.51, 86,249.49 and 18,048.61 is: 27,078.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,487.51 : 86,249.49 = 18,048.61 : x
  2. Step 2: Convert to fraction form
    57,487.51/86,249.49 = 18,048.61/x
  3. Step 3: Cross multiply
    57,487.51x = 86,249.49 × 18,048.61
  4. Step 4: Simplify right side
    57,487.51x = 1,556,683,407.71
  5. Step 5: Solve for x
    x = 1,556,683,407.71/57,487.51
  6. Step 6: Final answer
    x = 27,078.64

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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.