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Finding the Fourth Proportional to 84,408.89, 126,675.59 and 40,035.78

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Solution

The fourth proportional to 84,408.89, 126,675.59 and 40,035.78 is: 60,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,408.89 : 126,675.59 = 40,035.78 : x
  2. Step 2: Convert to fraction form
    84,408.89/126,675.59 = 40,035.78/x
  3. Step 3: Cross multiply
    84,408.89x = 126,675.59 × 40,035.78
  4. Step 4: Simplify right side
    84,408.89x = 5,071,555,852.43
  5. Step 5: Solve for x
    x = 5,071,555,852.43/84,408.89
  6. Step 6: Final answer
    x = 60,083.20

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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.