Home / 78,857.21-108,825.37-43,049.54

Finding the Fourth Proportional to 78,857.21, 108,825.37 and 43,049.54

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Solution

The fourth proportional to 78,857.21, 108,825.37 and 43,049.54 is: 59,409.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,857.21 : 108,825.37 = 43,049.54 : x
  2. Step 2: Convert to fraction form
    78,857.21/108,825.37 = 43,049.54/x
  3. Step 3: Cross multiply
    78,857.21x = 108,825.37 × 43,049.54
  4. Step 4: Simplify right side
    78,857.21x = 4,684,881,467.08
  5. Step 5: Solve for x
    x = 4,684,881,467.08/78,857.21
  6. Step 6: Final answer
    x = 59,409.68

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1.5x scale

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.