Home / 81,831.36-112,861.44-54,965.76

Finding the Fourth Proportional to 81,831.36, 112,861.44 and 54,965.76

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Solution

The fourth proportional to 81,831.36, 112,861.44 and 54,965.76 is: 75,808.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,831.36 : 112,861.44 = 54,965.76 : x
  2. Step 2: Convert to fraction form
    81,831.36/112,861.44 = 54,965.76/x
  3. Step 3: Cross multiply
    81,831.36x = 112,861.44 × 54,965.76
  4. Step 4: Simplify right side
    81,831.36x = 6,203,514,824.29
  5. Step 5: Solve for x
    x = 6,203,514,824.29/81,831.36
  6. Step 6: Final answer
    x = 75,808.53

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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.