Home / 78,254.24-117,390.48-28,357.84

Finding the Fourth Proportional to 78,254.24, 117,390.48 and 28,357.84

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Solution

The fourth proportional to 78,254.24, 117,390.48 and 28,357.84 is: 42,540.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,254.24 : 117,390.48 = 28,357.84 : x
  2. Step 2: Convert to fraction form
    78,254.24/117,390.48 = 28,357.84/x
  3. Step 3: Cross multiply
    78,254.24x = 117,390.48 × 28,357.84
  4. Step 4: Simplify right side
    78,254.24x = 3,328,940,449.36
  5. Step 5: Solve for x
    x = 3,328,940,449.36/78,254.24
  6. Step 6: Final answer
    x = 42,540.06

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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.