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Finding the Fourth Proportional to 85,367.88, 117,865.98 and 55,226.16

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Solution

The fourth proportional to 85,367.88, 117,865.98 and 55,226.16 is: 76,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,367.88 : 117,865.98 = 55,226.16 : x
  2. Step 2: Convert to fraction form
    85,367.88/117,865.98 = 55,226.16/x
  3. Step 3: Cross multiply
    85,367.88x = 117,865.98 × 55,226.16
  4. Step 4: Simplify right side
    85,367.88x = 6,509,285,470.04
  5. Step 5: Solve for x
    x = 6,509,285,470.04/85,367.88
  6. Step 6: Final answer
    x = 76,249.82

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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.