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Finding the Fourth Proportional to 57,359.88, 86,040.36 and 17,917.20

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Solution

The fourth proportional to 57,359.88, 86,040.36 and 17,917.20 is: 26,875.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,359.88 : 86,040.36 = 17,917.20 : x
  2. Step 2: Convert to fraction form
    57,359.88/86,040.36 = 17,917.20/x
  3. Step 3: Cross multiply
    57,359.88x = 86,040.36 × 17,917.20
  4. Step 4: Simplify right side
    57,359.88x = 1,541,602,338.19
  5. Step 5: Solve for x
    x = 1,541,602,338.19/57,359.88
  6. Step 6: Final answer
    x = 26,875.97

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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.