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Finding the Fourth Proportional to 85,498.80, 128,255.49 and 22,327.32

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Solution

The fourth proportional to 85,498.80, 128,255.49 and 22,327.32 is: 33,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,498.80 : 128,255.49 = 22,327.32 : x
  2. Step 2: Convert to fraction form
    85,498.80/128,255.49 = 22,327.32/x
  3. Step 3: Cross multiply
    85,498.80x = 128,255.49 × 22,327.32
  4. Step 4: Simplify right side
    85,498.80x = 2,863,601,366.99
  5. Step 5: Solve for x
    x = 2,863,601,366.99/85,498.80
  6. Step 6: Final answer
    x = 33,492.88

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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.