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Finding the Fourth Proportional to 56,891.73, 85,351.28 and 21,831.39

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Solution

The fourth proportional to 56,891.73, 85,351.28 and 21,831.39 is: 32,752.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,891.73 : 85,351.28 = 21,831.39 : x
  2. Step 2: Convert to fraction form
    56,891.73/85,351.28 = 21,831.39/x
  3. Step 3: Cross multiply
    56,891.73x = 85,351.28 × 21,831.39
  4. Step 4: Simplify right side
    56,891.73x = 1,863,337,080.68
  5. Step 5: Solve for x
    x = 1,863,337,080.68/56,891.73
  6. Step 6: Final answer
    x = 32,752.34

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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.