Home / 76,165.77-114,174.08-31,805.21

Finding the Fourth Proportional to 76,165.77, 114,174.08 and 31,805.21

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Solution

The fourth proportional to 76,165.77, 114,174.08 and 31,805.21 is: 47,676.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,165.77 : 114,174.08 = 31,805.21 : x
  2. Step 2: Convert to fraction form
    76,165.77/114,174.08 = 31,805.21/x
  3. Step 3: Cross multiply
    76,165.77x = 114,174.08 × 31,805.21
  4. Step 4: Simplify right side
    76,165.77x = 3,631,330,020.09
  5. Step 5: Solve for x
    x = 3,631,330,020.09/76,165.77
  6. Step 6: Final answer
    x = 47,676.67

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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.