Home / 77,820,619.79-107,394,739.18-42,540,374.61

Finding the Fourth Proportional to 77,820,619.79, 107,394,739.18 and 42,540,374.61

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Solution

The fourth proportional to 77,820,619.79, 107,394,739.18 and 42,540,374.61 is: 58,706,965.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820,619.79 : 107,394,739.18 = 42,540,374.61 : x
  2. Step 2: Convert to fraction form
    77,820,619.79/107,394,739.18 = 42,540,374.61/x
  3. Step 3: Cross multiply
    77,820,619.79x = 107,394,739.18 × 42,540,374.61
  4. Step 4: Simplify right side
    77,820,619.79x = 4,568,612,435,754,093
  5. Step 5: Solve for x
    x = 4,568,612,435,754,093/77,820,619.79
  6. Step 6: Final answer
    x = 58,706,965.43

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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.