Home / 81,128.24-111,887.16-52,823.60

Finding the Fourth Proportional to 81,128.24, 111,887.16 and 52,823.60

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Solution

The fourth proportional to 81,128.24, 111,887.16 and 52,823.60 is: 72,851.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,128.24 : 111,887.16 = 52,823.60 : x
  2. Step 2: Convert to fraction form
    81,128.24/111,887.16 = 52,823.60/x
  3. Step 3: Cross multiply
    81,128.24x = 111,887.16 × 52,823.60
  4. Step 4: Simplify right side
    81,128.24x = 5,910,282,584.98
  5. Step 5: Solve for x
    x = 5,910,282,584.98/81,128.24
  6. Step 6: Final answer
    x = 72,851.11

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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.