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Finding the Fourth Proportional to 85,789.94, 128,701.07 and 32,497.88

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Solution

The fourth proportional to 85,789.94, 128,701.07 and 32,497.88 is: 48,752.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,789.94 : 128,701.07 = 32,497.88 : x
  2. Step 2: Convert to fraction form
    85,789.94/128,701.07 = 32,497.88/x
  3. Step 3: Cross multiply
    85,789.94x = 128,701.07 × 32,497.88
  4. Step 4: Simplify right side
    85,789.94x = 4,182,511,244.60
  5. Step 5: Solve for x
    x = 4,182,511,244.60/85,789.94
  6. Step 6: Final answer
    x = 48,752.94

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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.