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Finding the Fourth Proportional to 85,553.67, 118,008.45 and 54,878.22

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Solution

The fourth proportional to 85,553.67, 118,008.45 and 54,878.22 is: 75,696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,553.67 : 118,008.45 = 54,878.22 : x
  2. Step 2: Convert to fraction form
    85,553.67/118,008.45 = 54,878.22/x
  3. Step 3: Cross multiply
    85,553.67x = 118,008.45 × 54,878.22
  4. Step 4: Simplify right side
    85,553.67x = 6,476,093,680.96
  5. Step 5: Solve for x
    x = 6,476,093,680.96/85,553.67
  6. Step 6: Final answer
    x = 75,696.27

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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.