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Finding the Fourth Proportional to 40,687.26, 60,992.40 and 30,676.46

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Solution

The fourth proportional to 40,687.26, 60,992.40 and 30,676.46 is: 45,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,687.26 : 60,992.40 = 30,676.46 : x
  2. Step 2: Convert to fraction form
    40,687.26/60,992.40 = 30,676.46/x
  3. Step 3: Cross multiply
    40,687.26x = 60,992.40 × 30,676.46
  4. Step 4: Simplify right side
    40,687.26x = 1,871,030,918.90
  5. Step 5: Solve for x
    x = 1,871,030,918.90/40,687.26
  6. Step 6: Final answer
    x = 45,985.67

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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.