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Finding the Fourth Proportional to 72,520, 100,077.63 and 44,231.56

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Solution

The fourth proportional to 72,520, 100,077.63 and 44,231.56 is: 61,039.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,520 : 100,077.63 = 44,231.56 : x
  2. Step 2: Convert to fraction form
    72,520/100,077.63 = 44,231.56/x
  3. Step 3: Cross multiply
    72,520x = 100,077.63 × 44,231.56
  4. Step 4: Simplify right side
    72,520x = 4,426,589,696.00
  5. Step 5: Solve for x
    x = 4,426,589,696.00/72,520
  6. Step 6: Final answer
    x = 61,039.57

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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.