Home / 81,029.70-111,818.07-50,831.28

Finding the Fourth Proportional to 81,029.70, 111,818.07 and 50,831.28

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Solution

The fourth proportional to 81,029.70, 111,818.07 and 50,831.28 is: 70,145.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.70 : 111,818.07 = 50,831.28 : x
  2. Step 2: Convert to fraction form
    81,029.70/111,818.07 = 50,831.28/x
  3. Step 3: Cross multiply
    81,029.70x = 111,818.07 × 50,831.28
  4. Step 4: Simplify right side
    81,029.70x = 5,683,855,625.23
  5. Step 5: Solve for x
    x = 5,683,855,625.23/81,029.70
  6. Step 6: Final answer
    x = 70,145.34

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1.5x scale

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.