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Finding the Fourth Proportional to 85,660.52, 128,486.82 and 22,479.08

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Solution

The fourth proportional to 85,660.52, 128,486.82 and 22,479.08 is: 33,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,660.52 : 128,486.82 = 22,479.08 : x
  2. Step 2: Convert to fraction form
    85,660.52/128,486.82 = 22,479.08/x
  3. Step 3: Cross multiply
    85,660.52x = 128,486.82 × 22,479.08
  4. Step 4: Simplify right side
    85,660.52x = 2,888,265,505.73
  5. Step 5: Solve for x
    x = 2,888,265,505.73/85,660.52
  6. Step 6: Final answer
    x = 33,717.58

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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.