Home / 53,764.95-80,679.86-18,729.21

Finding the Fourth Proportional to 53,764.95, 80,679.86 and 18,729.21

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Solution

The fourth proportional to 53,764.95, 80,679.86 and 18,729.21 is: 28,105.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,764.95 : 80,679.86 = 18,729.21 : x
  2. Step 2: Convert to fraction form
    53,764.95/80,679.86 = 18,729.21/x
  3. Step 3: Cross multiply
    53,764.95x = 80,679.86 × 18,729.21
  4. Step 4: Simplify right side
    53,764.95x = 1,511,070,040.71
  5. Step 5: Solve for x
    x = 1,511,070,040.71/53,764.95
  6. Step 6: Final answer
    x = 28,105.11

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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.