Home / 81,136.56-111,954.77-45,326.86

Finding the Fourth Proportional to 81,136.56, 111,954.77 and 45,326.86

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Solution

The fourth proportional to 81,136.56, 111,954.77 and 45,326.86 is: 62,543.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,136.56 : 111,954.77 = 45,326.86 : x
  2. Step 2: Convert to fraction form
    81,136.56/111,954.77 = 45,326.86/x
  3. Step 3: Cross multiply
    81,136.56x = 111,954.77 × 45,326.86
  4. Step 4: Simplify right side
    81,136.56x = 5,074,557,959.49
  5. Step 5: Solve for x
    x = 5,074,557,959.49/81,136.56
  6. Step 6: Final answer
    x = 62,543.42

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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.