Home / 39,118,712.05-53,981,122.17-21,713,687.20

Finding the Fourth Proportional to 39,118,712.05, 53,981,122.17 and 21,713,687.20

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Solution

The fourth proportional to 39,118,712.05, 53,981,122.17 and 21,713,687.20 is: 29,963,389.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,118,712.05 : 53,981,122.17 = 21,713,687.20 : x
  2. Step 2: Convert to fraction form
    39,118,712.05/53,981,122.17 = 21,713,687.20/x
  3. Step 3: Cross multiply
    39,118,712.05x = 53,981,122.17 × 21,713,687.20
  4. Step 4: Simplify right side
    39,118,712.05x = 1,172,129,201,504,365.25
  5. Step 5: Solve for x
    x = 1,172,129,201,504,365.25/39,118,712.05
  6. Step 6: Final answer
    x = 29,963,389.39

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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.