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Finding the Fourth Proportional to 85,514.67, 128,273.76 and 29,354.49

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Solution

The fourth proportional to 85,514.67, 128,273.76 and 29,354.49 is: 44,032.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,514.67 : 128,273.76 = 29,354.49 : x
  2. Step 2: Convert to fraction form
    85,514.67/128,273.76 = 29,354.49/x
  3. Step 3: Cross multiply
    85,514.67x = 128,273.76 × 29,354.49
  4. Step 4: Simplify right side
    85,514.67x = 3,765,410,805.18
  5. Step 5: Solve for x
    x = 3,765,410,805.18/85,514.67
  6. Step 6: Final answer
    x = 44,032.34

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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.