Home / 81,125.25-111,983.64-61,040.52

Finding the Fourth Proportional to 81,125.25, 111,983.64 and 61,040.52

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Solution

The fourth proportional to 81,125.25, 111,983.64 and 61,040.52 is: 84,259.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,125.25 : 111,983.64 = 61,040.52 : x
  2. Step 2: Convert to fraction form
    81,125.25/111,983.64 = 61,040.52/x
  3. Step 3: Cross multiply
    81,125.25x = 111,983.64 × 61,040.52
  4. Step 4: Simplify right side
    81,125.25x = 6,835,539,617.09
  5. Step 5: Solve for x
    x = 6,835,539,617.09/81,125.25
  6. Step 6: Final answer
    x = 84,259.09

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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.