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Finding the Fourth Proportional to 57,809.45, 86,722.43 and 17,831.81

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Solution

The fourth proportional to 57,809.45, 86,722.43 and 17,831.81 is: 26,750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,809.45 : 86,722.43 = 17,831.81 : x
  2. Step 2: Convert to fraction form
    57,809.45/86,722.43 = 17,831.81/x
  3. Step 3: Cross multiply
    57,809.45x = 86,722.43 × 17,831.81
  4. Step 4: Simplify right side
    57,809.45x = 1,546,417,505.47
  5. Step 5: Solve for x
    x = 1,546,417,505.47/57,809.45
  6. Step 6: Final answer
    x = 26,750.26

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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.