Home / 72,289.50-108,439.92-19,701.06

Finding the Fourth Proportional to 72,289.50, 108,439.92 and 19,701.06

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Solution

The fourth proportional to 72,289.50, 108,439.92 and 19,701.06 is: 29,553.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,289.50 : 108,439.92 = 19,701.06 : x
  2. Step 2: Convert to fraction form
    72,289.50/108,439.92 = 19,701.06/x
  3. Step 3: Cross multiply
    72,289.50x = 108,439.92 × 19,701.06
  4. Step 4: Simplify right side
    72,289.50x = 2,136,381,370.32
  5. Step 5: Solve for x
    x = 2,136,381,370.32/72,289.50
  6. Step 6: Final answer
    x = 29,553.14

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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.