Home / 72,682.56-108,921.60-57,825.36

Finding the Fourth Proportional to 72,682.56, 108,921.60 and 57,825.36

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Solution

The fourth proportional to 72,682.56, 108,921.60 and 57,825.36 is: 86,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,682.56 : 108,921.60 = 57,825.36 : x
  2. Step 2: Convert to fraction form
    72,682.56/108,921.60 = 57,825.36/x
  3. Step 3: Cross multiply
    72,682.56x = 108,921.60 × 57,825.36
  4. Step 4: Simplify right side
    72,682.56x = 6,298,430,731.78
  5. Step 5: Solve for x
    x = 6,298,430,731.78/72,682.56
  6. Step 6: Final answer
    x = 86,656.70

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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.