Home / 76,634.32-114,951.48-21,228.88

Finding the Fourth Proportional to 76,634.32, 114,951.48 and 21,228.88

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Solution

The fourth proportional to 76,634.32, 114,951.48 and 21,228.88 is: 31,843.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,634.32 : 114,951.48 = 21,228.88 : x
  2. Step 2: Convert to fraction form
    76,634.32/114,951.48 = 21,228.88/x
  3. Step 3: Cross multiply
    76,634.32x = 114,951.48 × 21,228.88
  4. Step 4: Simplify right side
    76,634.32x = 2,440,291,174.74
  5. Step 5: Solve for x
    x = 2,440,291,174.74/76,634.32
  6. Step 6: Final answer
    x = 31,843.32

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1.5x scale

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.