Home / 51,161.09-76,789.63-31,478.09

Finding the Fourth Proportional to 51,161.09, 76,789.63 and 31,478.09

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Solution

The fourth proportional to 51,161.09, 76,789.63 and 31,478.09 is: 47,246.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,161.09 : 76,789.63 = 31,478.09 : x
  2. Step 2: Convert to fraction form
    51,161.09/76,789.63 = 31,478.09/x
  3. Step 3: Cross multiply
    51,161.09x = 76,789.63 × 31,478.09
  4. Step 4: Simplify right side
    51,161.09x = 2,417,190,884.21
  5. Step 5: Solve for x
    x = 2,417,190,884.21/51,161.09
  6. Step 6: Final answer
    x = 47,246.67

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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.