Home / 72,684,114.45-100,305,260.52-39,644,355.21

Finding the Fourth Proportional to 72,684,114.45, 100,305,260.52 and 39,644,355.21

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Solution

The fourth proportional to 72,684,114.45, 100,305,260.52 and 39,644,355.21 is: 54,709,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,684,114.45 : 100,305,260.52 = 39,644,355.21 : x
  2. Step 2: Convert to fraction form
    72,684,114.45/100,305,260.52 = 39,644,355.21/x
  3. Step 3: Cross multiply
    72,684,114.45x = 100,305,260.52 × 39,644,355.21
  4. Step 4: Simplify right side
    72,684,114.45x = 3,976,537,377,486,469
  5. Step 5: Solve for x
    x = 3,976,537,377,486,469/72,684,114.45
  6. Step 6: Final answer
    x = 54,709,855.21

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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.