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Finding the Fourth Proportional to 72,724, 100,377.12 and 44,453.56

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Solution

The fourth proportional to 72,724, 100,377.12 and 44,453.56 is: 61,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,724 : 100,377.12 = 44,453.56 : x
  2. Step 2: Convert to fraction form
    72,724/100,377.12 = 44,453.56/x
  3. Step 3: Cross multiply
    72,724x = 100,377.12 × 44,453.56
  4. Step 4: Simplify right side
    72,724x = 4,462,120,326.55
  5. Step 5: Solve for x
    x = 4,462,120,326.55/72,724
  6. Step 6: Final answer
    x = 61,356.92

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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.