Home / 81,000.28-111,653.09-55,462.48

Finding the Fourth Proportional to 81,000.28, 111,653.09 and 55,462.48

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Solution

The fourth proportional to 81,000.28, 111,653.09 and 55,462.48 is: 76,451.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,000.28 : 111,653.09 = 55,462.48 : x
  2. Step 2: Convert to fraction form
    81,000.28/111,653.09 = 55,462.48/x
  3. Step 3: Cross multiply
    81,000.28x = 111,653.09 × 55,462.48
  4. Step 4: Simplify right side
    81,000.28x = 6,192,557,130.59
  5. Step 5: Solve for x
    x = 6,192,557,130.59/81,000.28
  6. Step 6: Final answer
    x = 76,451.06

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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.