Home / 76,565.06-114,838.47-20,409.38

Finding the Fourth Proportional to 76,565.06, 114,838.47 and 20,409.38

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Solution

The fourth proportional to 76,565.06, 114,838.47 and 20,409.38 is: 30,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,565.06 : 114,838.47 = 20,409.38 : x
  2. Step 2: Convert to fraction form
    76,565.06/114,838.47 = 20,409.38/x
  3. Step 3: Cross multiply
    76,565.06x = 114,838.47 × 20,409.38
  4. Step 4: Simplify right side
    76,565.06x = 2,343,781,972.85
  5. Step 5: Solve for x
    x = 2,343,781,972.85/76,565.06
  6. Step 6: Final answer
    x = 30,611.64

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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.