Home / 78,610.24-108,481.47-42,800.20

Finding the Fourth Proportional to 78,610.24, 108,481.47 and 42,800.20

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Solution

The fourth proportional to 78,610.24, 108,481.47 and 42,800.20 is: 59,063.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,610.24 : 108,481.47 = 42,800.20 : x
  2. Step 2: Convert to fraction form
    78,610.24/108,481.47 = 42,800.20/x
  3. Step 3: Cross multiply
    78,610.24x = 108,481.47 × 42,800.20
  4. Step 4: Simplify right side
    78,610.24x = 4,643,028,612.29
  5. Step 5: Solve for x
    x = 4,643,028,612.29/78,610.24
  6. Step 6: Final answer
    x = 59,063.92

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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.