Home / 77,742.74-107,283.78-43,748.57

Finding the Fourth Proportional to 77,742.74, 107,283.78 and 43,748.57

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Solution

The fourth proportional to 77,742.74, 107,283.78 and 43,748.57 is: 60,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,742.74 : 107,283.78 = 43,748.57 : x
  2. Step 2: Convert to fraction form
    77,742.74/107,283.78 = 43,748.57/x
  3. Step 3: Cross multiply
    77,742.74x = 107,283.78 × 43,748.57
  4. Step 4: Simplify right side
    77,742.74x = 4,693,511,422.78
  5. Step 5: Solve for x
    x = 4,693,511,422.78/77,742.74
  6. Step 6: Final answer
    x = 60,372.35

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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.