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Finding the Fourth Proportional to 85,489.84, 117,899.22 and 71,196.88

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Solution

The fourth proportional to 85,489.84, 117,899.22 and 71,196.88 is: 98,187.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,489.84 : 117,899.22 = 71,196.88 : x
  2. Step 2: Convert to fraction form
    85,489.84/117,899.22 = 71,196.88/x
  3. Step 3: Cross multiply
    85,489.84x = 117,899.22 × 71,196.88
  4. Step 4: Simplify right side
    85,489.84x = 8,394,056,618.43
  5. Step 5: Solve for x
    x = 8,394,056,618.43/85,489.84
  6. Step 6: Final answer
    x = 98,187.77

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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.