Home / 38,689,144.52-53,391,017.21-21,285,115.97

Finding the Fourth Proportional to 38,689,144.52, 53,391,017.21 and 21,285,115.97

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Solution

The fourth proportional to 38,689,144.52, 53,391,017.21 and 21,285,115.97 is: 29,373,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689,144.52 : 53,391,017.21 = 21,285,115.97 : x
  2. Step 2: Convert to fraction form
    38,689,144.52/53,391,017.21 = 21,285,115.97/x
  3. Step 3: Cross multiply
    38,689,144.52x = 53,391,017.21 × 21,285,115.97
  4. Step 4: Simplify right side
    38,689,144.52x = 1,136,433,992,697,735.25
  5. Step 5: Solve for x
    x = 1,136,433,992,697,735.25/38,689,144.52
  6. Step 6: Final answer
    x = 29,373,458.81

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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.