Home / 72,018.20-108,027.40-19,427.74

Finding the Fourth Proportional to 72,018.20, 108,027.40 and 19,427.74

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Solution

The fourth proportional to 72,018.20, 108,027.40 and 19,427.74 is: 29,141.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,018.20 : 108,027.40 = 19,427.74 : x
  2. Step 2: Convert to fraction form
    72,018.20/108,027.40 = 19,427.74/x
  3. Step 3: Cross multiply
    72,018.20x = 108,027.40 × 19,427.74
  4. Step 4: Simplify right side
    72,018.20x = 2,098,728,240.08
  5. Step 5: Solve for x
    x = 2,098,728,240.08/72,018.20
  6. Step 6: Final answer
    x = 29,141.64

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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.