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Finding the Fourth Proportional to 75,122.72, 112,699.22 and 27,738.12

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Solution

The fourth proportional to 75,122.72, 112,699.22 and 27,738.12 is: 41,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,122.72 : 112,699.22 = 27,738.12 : x
  2. Step 2: Convert to fraction form
    75,122.72/112,699.22 = 27,738.12/x
  3. Step 3: Cross multiply
    75,122.72x = 112,699.22 × 27,738.12
  4. Step 4: Simplify right side
    75,122.72x = 3,126,064,488.27
  5. Step 5: Solve for x
    x = 3,126,064,488.27/75,122.72
  6. Step 6: Final answer
    x = 41,612.77

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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.