Home / 76,178.31-114,235.87-28,785.21

Finding the Fourth Proportional to 76,178.31, 114,235.87 and 28,785.21

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Solution

The fourth proportional to 76,178.31, 114,235.87 and 28,785.21 is: 43,165.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,178.31 : 114,235.87 = 28,785.21 : x
  2. Step 2: Convert to fraction form
    76,178.31/114,235.87 = 28,785.21/x
  3. Step 3: Cross multiply
    76,178.31x = 114,235.87 × 28,785.21
  4. Step 4: Simplify right side
    76,178.31x = 3,288,302,792.38
  5. Step 5: Solve for x
    x = 3,288,302,792.38/76,178.31
  6. Step 6: Final answer
    x = 43,165.87

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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.