Home / 81,904.15-122,856.11-25,749.16

Finding the Fourth Proportional to 81,904.15, 122,856.11 and 25,749.16

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Solution

The fourth proportional to 81,904.15, 122,856.11 and 25,749.16 is: 38,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,904.15 : 122,856.11 = 25,749.16 : x
  2. Step 2: Convert to fraction form
    81,904.15/122,856.11 = 25,749.16/x
  3. Step 3: Cross multiply
    81,904.15x = 122,856.11 × 25,749.16
  4. Step 4: Simplify right side
    81,904.15x = 3,163,441,633.37
  5. Step 5: Solve for x
    x = 3,163,441,633.37/81,904.15
  6. Step 6: Final answer
    x = 38,623.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.