Home / 31,409.86-47,121.18-28,273.04

Finding the Fourth Proportional to 31,409.86, 47,121.18 and 28,273.04

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Solution

The fourth proportional to 31,409.86, 47,121.18 and 28,273.04 is: 42,415.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.86 : 47,121.18 = 28,273.04 : x
  2. Step 2: Convert to fraction form
    31,409.86/47,121.18 = 28,273.04/x
  3. Step 3: Cross multiply
    31,409.86x = 47,121.18 × 28,273.04
  4. Step 4: Simplify right side
    31,409.86x = 1,332,259,006.99
  5. Step 5: Solve for x
    x = 1,332,259,006.99/31,409.86
  6. Step 6: Final answer
    x = 42,415.32

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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.