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Finding the Fourth Proportional to 72,976.46, 100,713.22 and 40,721.22

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Solution

The fourth proportional to 72,976.46, 100,713.22 and 40,721.22 is: 56,198.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,976.46 : 100,713.22 = 40,721.22 : x
  2. Step 2: Convert to fraction form
    72,976.46/100,713.22 = 40,721.22/x
  3. Step 3: Cross multiply
    72,976.46x = 100,713.22 × 40,721.22
  4. Step 4: Simplify right side
    72,976.46x = 4,101,165,188.53
  5. Step 5: Solve for x
    x = 4,101,165,188.53/72,976.46
  6. Step 6: Final answer
    x = 56,198.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.