Home / 76,712.28-115,116.32-29,331.35

Finding the Fourth Proportional to 76,712.28, 115,116.32 and 29,331.35

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Solution

The fourth proportional to 76,712.28, 115,116.32 and 29,331.35 is: 44,015.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,712.28 : 115,116.32 = 29,331.35 : x
  2. Step 2: Convert to fraction form
    76,712.28/115,116.32 = 29,331.35/x
  3. Step 3: Cross multiply
    76,712.28x = 115,116.32 × 29,331.35
  4. Step 4: Simplify right side
    76,712.28x = 3,376,517,433.75
  5. Step 5: Solve for x
    x = 3,376,517,433.75/76,712.28
  6. Step 6: Final answer
    x = 44,015.34

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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.