Home / 72,578.02-108,816-28,167.34

Finding the Fourth Proportional to 72,578.02, 108,816 and 28,167.34

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Solution

The fourth proportional to 72,578.02, 108,816 and 28,167.34 is: 42,231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,578.02 : 108,816 = 28,167.34 : x
  2. Step 2: Convert to fraction form
    72,578.02/108,816 = 28,167.34/x
  3. Step 3: Cross multiply
    72,578.02x = 108,816 × 28,167.34
  4. Step 4: Simplify right side
    72,578.02x = 3,065,057,269.44
  5. Step 5: Solve for x
    x = 3,065,057,269.44/72,578.02
  6. Step 6: Final answer
    x = 42,231.21

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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.