Home / 78,083.44-107,754.40-42,272.52

Finding the Fourth Proportional to 78,083.44, 107,754.40 and 42,272.52

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Solution

The fourth proportional to 78,083.44, 107,754.40 and 42,272.52 is: 58,335.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,083.44 : 107,754.40 = 42,272.52 : x
  2. Step 2: Convert to fraction form
    78,083.44/107,754.40 = 42,272.52/x
  3. Step 3: Cross multiply
    78,083.44x = 107,754.40 × 42,272.52
  4. Step 4: Simplify right side
    78,083.44x = 4,555,050,029.09
  5. Step 5: Solve for x
    x = 4,555,050,029.09/78,083.44
  6. Step 6: Final answer
    x = 58,335.67

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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.