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Finding the Fourth Proportional to 57,361.65, 86,042.48 and 17,918.81

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Solution

The fourth proportional to 57,361.65, 86,042.48 and 17,918.81 is: 26,878.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,361.65 : 86,042.48 = 17,918.81 : x
  2. Step 2: Convert to fraction form
    57,361.65/86,042.48 = 17,918.81/x
  3. Step 3: Cross multiply
    57,361.65x = 86,042.48 × 17,918.81
  4. Step 4: Simplify right side
    57,361.65x = 1,541,778,331.24
  5. Step 5: Solve for x
    x = 1,541,778,331.24/57,361.65
  6. Step 6: Final answer
    x = 26,878.21

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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.