Home / 81,600.32-112,593.48-54,781.76

Finding the Fourth Proportional to 81,600.32, 112,593.48 and 54,781.76

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Solution

The fourth proportional to 81,600.32, 112,593.48 and 54,781.76 is: 75,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,600.32 : 112,593.48 = 54,781.76 : x
  2. Step 2: Convert to fraction form
    81,600.32/112,593.48 = 54,781.76/x
  3. Step 3: Cross multiply
    81,600.32x = 112,593.48 × 54,781.76
  4. Step 4: Simplify right side
    81,600.32x = 6,168,068,998.92
  5. Step 5: Solve for x
    x = 6,168,068,998.92/81,600.32
  6. Step 6: Final answer
    x = 75,588.78

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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.