Home / 72,311.97-108,457.02-19,725.60

Finding the Fourth Proportional to 72,311.97, 108,457.02 and 19,725.60

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Solution

The fourth proportional to 72,311.97, 108,457.02 and 19,725.60 is: 29,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,311.97 : 108,457.02 = 19,725.60 : x
  2. Step 2: Convert to fraction form
    72,311.97/108,457.02 = 19,725.60/x
  3. Step 3: Cross multiply
    72,311.97x = 108,457.02 × 19,725.60
  4. Step 4: Simplify right side
    72,311.97x = 2,139,379,793.71
  5. Step 5: Solve for x
    x = 2,139,379,793.71/72,311.97
  6. Step 6: Final answer
    x = 29,585.42

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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.