Home / 76,611.20-114,934.08-31,631.36

Finding the Fourth Proportional to 76,611.20, 114,934.08 and 31,631.36

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Solution

The fourth proportional to 76,611.20, 114,934.08 and 31,631.36 is: 47,454.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,611.20 : 114,934.08 = 31,631.36 : x
  2. Step 2: Convert to fraction form
    76,611.20/114,934.08 = 31,631.36/x
  3. Step 3: Cross multiply
    76,611.20x = 114,934.08 × 31,631.36
  4. Step 4: Simplify right side
    76,611.20x = 3,635,521,260.75
  5. Step 5: Solve for x
    x = 3,635,521,260.75/76,611.20
  6. Step 6: Final answer
    x = 47,454.17

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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.