Home / 39,109,055.79-53,967,982.82-21,705,412.80

Finding the Fourth Proportional to 39,109,055.79, 53,967,982.82 and 21,705,412.80

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Solution

The fourth proportional to 39,109,055.79, 53,967,982.82 and 21,705,412.80 is: 29,952,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109,055.79 : 53,967,982.82 = 21,705,412.80 : x
  2. Step 2: Convert to fraction form
    39,109,055.79/53,967,982.82 = 21,705,412.80/x
  3. Step 3: Cross multiply
    39,109,055.79x = 53,967,982.82 × 21,705,412.80
  4. Step 4: Simplify right side
    39,109,055.79x = 1,171,397,344,982,881
  5. Step 5: Solve for x
    x = 1,171,397,344,982,881/39,109,055.79
  6. Step 6: Final answer
    x = 29,952,074.30

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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.