Home / 81,786.12-112,843.44-47,774.76

Finding the Fourth Proportional to 81,786.12, 112,843.44 and 47,774.76

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Solution

The fourth proportional to 81,786.12, 112,843.44 and 47,774.76 is: 65,916.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,786.12 : 112,843.44 = 47,774.76 : x
  2. Step 2: Convert to fraction form
    81,786.12/112,843.44 = 47,774.76/x
  3. Step 3: Cross multiply
    81,786.12x = 112,843.44 × 47,774.76
  4. Step 4: Simplify right side
    81,786.12x = 5,391,068,263.57
  5. Step 5: Solve for x
    x = 5,391,068,263.57/81,786.12
  6. Step 6: Final answer
    x = 65,916.66

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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.