Home / 87,171,781.74-120,305,561.67-65,106,991.34

Finding the Fourth Proportional to 87,171,781.74, 120,305,561.67 and 65,106,991.34

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Solution

The fourth proportional to 87,171,781.74, 120,305,561.67 and 65,106,991.34 is: 89,853,998.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,171,781.74 : 120,305,561.67 = 65,106,991.34 : x
  2. Step 2: Convert to fraction form
    87,171,781.74/120,305,561.67 = 65,106,991.34/x
  3. Step 3: Cross multiply
    87,171,781.74x = 120,305,561.67 × 65,106,991.34
  4. Step 4: Simplify right side
    87,171,781.74x = 7,832,733,161,802,526
  5. Step 5: Solve for x
    x = 7,832,733,161,802,526/87,171,781.74
  6. Step 6: Final answer
    x = 89,853,998.68

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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.