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Finding the Fourth Proportional to 101,831.80, 140,496.06 and 58,805.80

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Solution

The fourth proportional to 101,831.80, 140,496.06 and 58,805.80 is: 81,133.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,831.80 : 140,496.06 = 58,805.80 : x
  2. Step 2: Convert to fraction form
    101,831.80/140,496.06 = 58,805.80/x
  3. Step 3: Cross multiply
    101,831.80x = 140,496.06 × 58,805.80
  4. Step 4: Simplify right side
    101,831.80x = 8,261,983,205.15
  5. Step 5: Solve for x
    x = 8,261,983,205.15/101,831.80
  6. Step 6: Final answer
    x = 81,133.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.