Home / 62,831.36-86,736.96-39,872.72

Finding the Fourth Proportional to 62,831.36, 86,736.96 and 39,872.72

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Solution

The fourth proportional to 62,831.36, 86,736.96 and 39,872.72 is: 55,043.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,831.36 : 86,736.96 = 39,872.72 : x
  2. Step 2: Convert to fraction form
    62,831.36/86,736.96 = 39,872.72/x
  3. Step 3: Cross multiply
    62,831.36x = 86,736.96 × 39,872.72
  4. Step 4: Simplify right side
    62,831.36x = 3,458,438,519.73
  5. Step 5: Solve for x
    x = 3,458,438,519.73/62,831.36
  6. Step 6: Final answer
    x = 55,043.19

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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.