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Finding the Fourth Proportional to 57,393.62, 86,104.32 and 19,948.28

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Solution

The fourth proportional to 57,393.62, 86,104.32 and 19,948.28 is: 29,927.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,393.62 : 86,104.32 = 19,948.28 : x
  2. Step 2: Convert to fraction form
    57,393.62/86,104.32 = 19,948.28/x
  3. Step 3: Cross multiply
    57,393.62x = 86,104.32 × 19,948.28
  4. Step 4: Simplify right side
    57,393.62x = 1,717,633,084.57
  5. Step 5: Solve for x
    x = 1,717,633,084.57/57,393.62
  6. Step 6: Final answer
    x = 29,927.25

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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.