Home / 81,387,744-122,081,659.76-30,263,119.80

Finding the Fourth Proportional to 81,387,744, 122,081,659.76 and 30,263,119.80

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Solution

The fourth proportional to 81,387,744, 122,081,659.76 and 30,263,119.80 is: 45,394,695.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387,744 : 122,081,659.76 = 30,263,119.80 : x
  2. Step 2: Convert to fraction form
    81,387,744/122,081,659.76 = 30,263,119.80/x
  3. Step 3: Cross multiply
    81,387,744x = 122,081,659.76 × 30,263,119.80
  4. Step 4: Simplify right side
    81,387,744x = 3,694,571,894,699,719.50
  5. Step 5: Solve for x
    x = 3,694,571,894,699,719.50/81,387,744
  6. Step 6: Final answer
    x = 45,394,695.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.