Home / 40,739.82-61,125.24-21,005.78

Finding the Fourth Proportional to 40,739.82, 61,125.24 and 21,005.78

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Solution

The fourth proportional to 40,739.82, 61,125.24 and 21,005.78 is: 31,516.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,739.82 : 61,125.24 = 21,005.78 : x
  2. Step 2: Convert to fraction form
    40,739.82/61,125.24 = 21,005.78/x
  3. Step 3: Cross multiply
    40,739.82x = 61,125.24 × 21,005.78
  4. Step 4: Simplify right side
    40,739.82x = 1,283,983,343.89
  5. Step 5: Solve for x
    x = 1,283,983,343.89/40,739.82
  6. Step 6: Final answer
    x = 31,516.67

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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.