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Finding the Fourth Proportional to 7,212,021.52, 9,949,672.84 and 4,309,755.92

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Solution

The fourth proportional to 7,212,021.52, 9,949,672.84 and 4,309,755.92 is: 5,945,720.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212,021.52 : 9,949,672.84 = 4,309,755.92 : x
  2. Step 2: Convert to fraction form
    7,212,021.52/9,949,672.84 = 4,309,755.92/x
  3. Step 3: Cross multiply
    7,212,021.52x = 9,949,672.84 × 4,309,755.92
  4. Step 4: Simplify right side
    7,212,021.52x = 42,880,661,424,253.21
  5. Step 5: Solve for x
    x = 42,880,661,424,253.21/7,212,021.52
  6. Step 6: Final answer
    x = 5,945,720.12

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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.