Home / 72,257.08-108,385.29-19,666.42

Finding the Fourth Proportional to 72,257.08, 108,385.29 and 19,666.42

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Solution

The fourth proportional to 72,257.08, 108,385.29 and 19,666.42 is: 29,499.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257.08 : 108,385.29 = 19,666.42 : x
  2. Step 2: Convert to fraction form
    72,257.08/108,385.29 = 19,666.42/x
  3. Step 3: Cross multiply
    72,257.08x = 108,385.29 × 19,666.42
  4. Step 4: Simplify right side
    72,257.08x = 2,131,550,634.96
  5. Step 5: Solve for x
    x = 2,131,550,634.96/72,257.08
  6. Step 6: Final answer
    x = 29,499.54

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1.5x scale

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.