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Finding the Fourth Proportional to 85,468.77, 128,203.25 and 22,288.84

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Solution

The fourth proportional to 85,468.77, 128,203.25 and 22,288.84 is: 33,433.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,468.77 : 128,203.25 = 22,288.84 : x
  2. Step 2: Convert to fraction form
    85,468.77/128,203.25 = 22,288.84/x
  3. Step 3: Cross multiply
    85,468.77x = 128,203.25 × 22,288.84
  4. Step 4: Simplify right side
    85,468.77x = 2,857,500,974.27
  5. Step 5: Solve for x
    x = 2,857,500,974.27/85,468.77
  6. Step 6: Final answer
    x = 33,433.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.