Home / 86,989.33-120,103.74-54,333.49

Finding the Fourth Proportional to 86,989.33, 120,103.74 and 54,333.49

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Solution

The fourth proportional to 86,989.33, 120,103.74 and 54,333.49 is: 75,016.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,989.33 : 120,103.74 = 54,333.49 : x
  2. Step 2: Convert to fraction form
    86,989.33/120,103.74 = 54,333.49/x
  3. Step 3: Cross multiply
    86,989.33x = 120,103.74 × 54,333.49
  4. Step 4: Simplify right side
    86,989.33x = 6,525,655,356.25
  5. Step 5: Solve for x
    x = 6,525,655,356.25/86,989.33
  6. Step 6: Final answer
    x = 75,016.73

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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.