Home / 81,247.71-112,150.02-55,838.19

Finding the Fourth Proportional to 81,247.71, 112,150.02 and 55,838.19

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Solution

The fourth proportional to 81,247.71, 112,150.02 and 55,838.19 is: 77,076.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,247.71 : 112,150.02 = 55,838.19 : x
  2. Step 2: Convert to fraction form
    81,247.71/112,150.02 = 55,838.19/x
  3. Step 3: Cross multiply
    81,247.71x = 112,150.02 × 55,838.19
  4. Step 4: Simplify right side
    81,247.71x = 6,262,253,494.86
  5. Step 5: Solve for x
    x = 6,262,253,494.86/81,247.71
  6. Step 6: Final answer
    x = 77,076.06

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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.