Home / 51,399.29-77,079.48-21,831.05

Finding the Fourth Proportional to 51,399.29, 77,079.48 and 21,831.05

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Solution

The fourth proportional to 51,399.29, 77,079.48 and 21,831.05 is: 32,738.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,399.29 : 77,079.48 = 21,831.05 : x
  2. Step 2: Convert to fraction form
    51,399.29/77,079.48 = 21,831.05/x
  3. Step 3: Cross multiply
    51,399.29x = 77,079.48 × 21,831.05
  4. Step 4: Simplify right side
    51,399.29x = 1,682,725,596.46
  5. Step 5: Solve for x
    x = 1,682,725,596.46/51,399.29
  6. Step 6: Final answer
    x = 32,738.31

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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.