Home / 86,728.36-119,661.06-54,910.84

Finding the Fourth Proportional to 86,728.36, 119,661.06 and 54,910.84

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Solution

The fourth proportional to 86,728.36, 119,661.06 and 54,910.84 is: 75,761.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,728.36 : 119,661.06 = 54,910.84 : x
  2. Step 2: Convert to fraction form
    86,728.36/119,661.06 = 54,910.84/x
  3. Step 3: Cross multiply
    86,728.36x = 119,661.06 × 54,910.84
  4. Step 4: Simplify right side
    86,728.36x = 6,570,689,319.89
  5. Step 5: Solve for x
    x = 6,570,689,319.89/86,728.36
  6. Step 6: Final answer
    x = 75,761.72

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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.