Home / 77,820,626.65-107,394,748.65-42,540,381.28

Finding the Fourth Proportional to 77,820,626.65, 107,394,748.65 and 42,540,381.28

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Solution

The fourth proportional to 77,820,626.65, 107,394,748.65 and 42,540,381.28 is: 58,706,974.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820,626.65 : 107,394,748.65 = 42,540,381.28 : x
  2. Step 2: Convert to fraction form
    77,820,626.65/107,394,748.65 = 42,540,381.28/x
  3. Step 3: Cross multiply
    77,820,626.65x = 107,394,748.65 × 42,540,381.28
  4. Step 4: Simplify right side
    77,820,626.65x = 4,568,613,555,040,766
  5. Step 5: Solve for x
    x = 4,568,613,555,040,766/77,820,626.65
  6. Step 6: Final answer
    x = 58,706,974.64

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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.