Home / 66,180.24-91,231.92-54,224.64

Finding the Fourth Proportional to 66,180.24, 91,231.92 and 54,224.64

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Solution

The fourth proportional to 66,180.24, 91,231.92 and 54,224.64 is: 74,750.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,180.24 : 91,231.92 = 54,224.64 : x
  2. Step 2: Convert to fraction form
    66,180.24/91,231.92 = 54,224.64/x
  3. Step 3: Cross multiply
    66,180.24x = 91,231.92 × 54,224.64
  4. Step 4: Simplify right side
    66,180.24x = 4,947,018,018.51
  5. Step 5: Solve for x
    x = 4,947,018,018.51/66,180.24
  6. Step 6: Final answer
    x = 74,750.68

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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.