Home / 45,308.90-67,907.82-20,342.54

Finding the Fourth Proportional to 45,308.90, 67,907.82 and 20,342.54

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Solution

The fourth proportional to 45,308.90, 67,907.82 and 20,342.54 is: 30,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,308.90 : 67,907.82 = 20,342.54 : x
  2. Step 2: Convert to fraction form
    45,308.90/67,907.82 = 20,342.54/x
  3. Step 3: Cross multiply
    45,308.90x = 67,907.82 × 20,342.54
  4. Step 4: Simplify right side
    45,308.90x = 1,381,417,544.66
  5. Step 5: Solve for x
    x = 1,381,417,544.66/45,308.90
  6. Step 6: Final answer
    x = 30,488.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.