Home / 72,511.86-108,755.46-19,909.02

Finding the Fourth Proportional to 72,511.86, 108,755.46 and 19,909.02

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Solution

The fourth proportional to 72,511.86, 108,755.46 and 19,909.02 is: 29,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511.86 : 108,755.46 = 19,909.02 : x
  2. Step 2: Convert to fraction form
    72,511.86/108,755.46 = 19,909.02/x
  3. Step 3: Cross multiply
    72,511.86x = 108,755.46 × 19,909.02
  4. Step 4: Simplify right side
    72,511.86x = 2,165,214,628.25
  5. Step 5: Solve for x
    x = 2,165,214,628.25/72,511.86
  6. Step 6: Final answer
    x = 29,860.14

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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.