Home / 74,909.21-103,377.74-43,078.11

Finding the Fourth Proportional to 74,909.21, 103,377.74 and 43,078.11

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Solution

The fourth proportional to 74,909.21, 103,377.74 and 43,078.11 is: 59,449.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,909.21 : 103,377.74 = 43,078.11 : x
  2. Step 2: Convert to fraction form
    74,909.21/103,377.74 = 43,078.11/x
  3. Step 3: Cross multiply
    74,909.21x = 103,377.74 × 43,078.11
  4. Step 4: Simplify right side
    74,909.21x = 4,453,317,439.88
  5. Step 5: Solve for x
    x = 4,453,317,439.88/74,909.21
  6. Step 6: Final answer
    x = 59,449.54

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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.