Home / 72,380.10-108,566.66-19,789.70

Finding the Fourth Proportional to 72,380.10, 108,566.66 and 19,789.70

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Solution

The fourth proportional to 72,380.10, 108,566.66 and 19,789.70 is: 29,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,380.10 : 108,566.66 = 19,789.70 : x
  2. Step 2: Convert to fraction form
    72,380.10/108,566.66 = 19,789.70/x
  3. Step 3: Cross multiply
    72,380.10x = 108,566.66 × 19,789.70
  4. Step 4: Simplify right side
    72,380.10x = 2,148,501,631.40
  5. Step 5: Solve for x
    x = 2,148,501,631.40/72,380.10
  6. Step 6: Final answer
    x = 29,683.60

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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.