Home / 77,820,621.30-107,394,741.25-42,540,376.11

Finding the Fourth Proportional to 77,820,621.30, 107,394,741.25 and 42,540,376.11

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Solution

The fourth proportional to 77,820,621.30, 107,394,741.25 and 42,540,376.11 is: 58,706,967.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820,621.30 : 107,394,741.25 = 42,540,376.11 : x
  2. Step 2: Convert to fraction form
    77,820,621.30/107,394,741.25 = 42,540,376.11/x
  3. Step 3: Cross multiply
    77,820,621.30x = 107,394,741.25 × 42,540,376.11
  4. Step 4: Simplify right side
    77,820,621.30x = 4,568,612,685,011,131
  5. Step 5: Solve for x
    x = 4,568,612,685,011,131/77,820,621.30
  6. Step 6: Final answer
    x = 58,706,967.49

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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.