Home / 72,520.97-108,779.29-19,933.61

Finding the Fourth Proportional to 72,520.97, 108,779.29 and 19,933.61

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Solution

The fourth proportional to 72,520.97, 108,779.29 and 19,933.61 is: 29,899.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,520.97 : 108,779.29 = 19,933.61 : x
  2. Step 2: Convert to fraction form
    72,520.97/108,779.29 = 19,933.61/x
  3. Step 3: Cross multiply
    72,520.97x = 108,779.29 × 19,933.61
  4. Step 4: Simplify right side
    72,520.97x = 2,168,363,349.21
  5. Step 5: Solve for x
    x = 2,168,363,349.21/72,520.97
  6. Step 6: Final answer
    x = 29,899.81

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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.