Home / 76,565.12-114,838.57-20,409.44

Finding the Fourth Proportional to 76,565.12, 114,838.57 and 20,409.44

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Solution

The fourth proportional to 76,565.12, 114,838.57 and 20,409.44 is: 30,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,565.12 : 114,838.57 = 20,409.44 : x
  2. Step 2: Convert to fraction form
    76,565.12/114,838.57 = 20,409.44/x
  3. Step 3: Cross multiply
    76,565.12x = 114,838.57 × 20,409.44
  4. Step 4: Simplify right side
    76,565.12x = 2,343,790,802.05
  5. Step 5: Solve for x
    x = 2,343,790,802.05/76,565.12
  6. Step 6: Final answer
    x = 30,611.73

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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.