Home / 72,684.40-109,039.56-20,092.72

Finding the Fourth Proportional to 72,684.40, 109,039.56 and 20,092.72

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Solution

The fourth proportional to 72,684.40, 109,039.56 and 20,092.72 is: 30,142.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,684.40 : 109,039.56 = 20,092.72 : x
  2. Step 2: Convert to fraction form
    72,684.40/109,039.56 = 20,092.72/x
  3. Step 3: Cross multiply
    72,684.40x = 109,039.56 × 20,092.72
  4. Step 4: Simplify right side
    72,684.40x = 2,190,901,348.00
  5. Step 5: Solve for x
    x = 2,190,901,348.00/72,684.40
  6. Step 6: Final answer
    x = 30,142.66

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1.5x scale

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.