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Finding the Fourth Proportional to 76,662.04, 114,992.52 and 21,258.04

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Solution

The fourth proportional to 76,662.04, 114,992.52 and 21,258.04 is: 31,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,662.04 : 114,992.52 = 21,258.04 : x
  2. Step 2: Convert to fraction form
    76,662.04/114,992.52 = 21,258.04/x
  3. Step 3: Cross multiply
    76,662.04x = 114,992.52 × 21,258.04
  4. Step 4: Simplify right side
    76,662.04x = 2,444,515,589.86
  5. Step 5: Solve for x
    x = 2,444,515,589.86/76,662.04
  6. Step 6: Final answer
    x = 31,886.91

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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.