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Finding the Fourth Proportional to 7,149,694.08, 9,865,991.52 and 4,209,044.16

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Solution

The fourth proportional to 7,149,694.08, 9,865,991.52 and 4,209,044.16 is: 5,808,135.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149,694.08 : 9,865,991.52 = 4,209,044.16 : x
  2. Step 2: Convert to fraction form
    7,149,694.08/9,865,991.52 = 4,209,044.16/x
  3. Step 3: Cross multiply
    7,149,694.08x = 9,865,991.52 × 4,209,044.16
  4. Step 4: Simplify right side
    7,149,694.08x = 41,526,393,989,865.52
  5. Step 5: Solve for x
    x = 41,526,393,989,865.52/7,149,694.08
  6. Step 6: Final answer
    x = 5,808,135.78

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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.