Home / 77,856.12-107,101.44-68,252.76

Finding the Fourth Proportional to 77,856.12, 107,101.44 and 68,252.76

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Solution

The fourth proportional to 77,856.12, 107,101.44 and 68,252.76 is: 93,890.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,856.12 : 107,101.44 = 68,252.76 : x
  2. Step 2: Convert to fraction form
    77,856.12/107,101.44 = 68,252.76/x
  3. Step 3: Cross multiply
    77,856.12x = 107,101.44 × 68,252.76
  4. Step 4: Simplify right side
    77,856.12x = 7,309,968,879.97
  5. Step 5: Solve for x
    x = 7,309,968,879.97/77,856.12
  6. Step 6: Final answer
    x = 93,890.74

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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.