Home / 76,011.72-114,029.87-31,640.21

Finding the Fourth Proportional to 76,011.72, 114,029.87 and 31,640.21

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Solution

The fourth proportional to 76,011.72, 114,029.87 and 31,640.21 is: 47,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,011.72 : 114,029.87 = 31,640.21 : x
  2. Step 2: Convert to fraction form
    76,011.72/114,029.87 = 31,640.21/x
  3. Step 3: Cross multiply
    76,011.72x = 114,029.87 × 31,640.21
  4. Step 4: Simplify right side
    76,011.72x = 3,607,928,304.72
  5. Step 5: Solve for x
    x = 3,607,928,304.72/76,011.72
  6. Step 6: Final answer
    x = 47,465.42

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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.