Home / 80,786.77-111,499.07-61,630.36

Finding the Fourth Proportional to 80,786.77, 111,499.07 and 61,630.36

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Solution

The fourth proportional to 80,786.77, 111,499.07 and 61,630.36 is: 85,060.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,786.77 : 111,499.07 = 61,630.36 : x
  2. Step 2: Convert to fraction form
    80,786.77/111,499.07 = 61,630.36/x
  3. Step 3: Cross multiply
    80,786.77x = 111,499.07 × 61,630.36
  4. Step 4: Simplify right side
    80,786.77x = 6,871,727,236.87
  5. Step 5: Solve for x
    x = 6,871,727,236.87/80,786.77
  6. Step 6: Final answer
    x = 85,060.06

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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.