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Finding the Fourth Proportional to 86,160.72, 129,261.78 and 29,992.56

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Solution

The fourth proportional to 86,160.72, 129,261.78 and 29,992.56 is: 44,996.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,160.72 : 129,261.78 = 29,992.56 : x
  2. Step 2: Convert to fraction form
    86,160.72/129,261.78 = 29,992.56/x
  3. Step 3: Cross multiply
    86,160.72x = 129,261.78 × 29,992.56
  4. Step 4: Simplify right side
    86,160.72x = 3,876,891,692.36
  5. Step 5: Solve for x
    x = 3,876,891,692.36/86,160.72
  6. Step 6: Final answer
    x = 44,996.05

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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.