Home / 72,501.23-108,730.97-19,912.43

Finding the Fourth Proportional to 72,501.23, 108,730.97 and 19,912.43

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Solution

The fourth proportional to 72,501.23, 108,730.97 and 19,912.43 is: 29,862.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,501.23 : 108,730.97 = 19,912.43 : x
  2. Step 2: Convert to fraction form
    72,501.23/108,730.97 = 19,912.43/x
  3. Step 3: Cross multiply
    72,501.23x = 108,730.97 × 19,912.43
  4. Step 4: Simplify right side
    72,501.23x = 2,165,097,729.39
  5. Step 5: Solve for x
    x = 2,165,097,729.39/72,501.23
  6. Step 6: Final answer
    x = 29,862.91

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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.