Home / 81,812.32-112,856.22-52,749.76

Finding the Fourth Proportional to 81,812.32, 112,856.22 and 52,749.76

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Solution

The fourth proportional to 81,812.32, 112,856.22 and 52,749.76 is: 72,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,812.32 : 112,856.22 = 52,749.76 : x
  2. Step 2: Convert to fraction form
    81,812.32/112,856.22 = 52,749.76/x
  3. Step 3: Cross multiply
    81,812.32x = 112,856.22 × 52,749.76
  4. Step 4: Simplify right side
    81,812.32x = 5,953,138,519.51
  5. Step 5: Solve for x
    x = 5,953,138,519.51/81,812.32
  6. Step 6: Final answer
    x = 72,765.80

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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.