Home / 69,081.02-103,621.52-19,161.12

Finding the Fourth Proportional to 69,081.02, 103,621.52 and 19,161.12

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Solution

The fourth proportional to 69,081.02, 103,621.52 and 19,161.12 is: 28,741.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,081.02 : 103,621.52 = 19,161.12 : x
  2. Step 2: Convert to fraction form
    69,081.02/103,621.52 = 19,161.12/x
  3. Step 3: Cross multiply
    69,081.02x = 103,621.52 × 19,161.12
  4. Step 4: Simplify right side
    69,081.02x = 1,985,504,379.30
  5. Step 5: Solve for x
    x = 1,985,504,379.30/69,081.02
  6. Step 6: Final answer
    x = 28,741.68

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Double scale
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Similar ratio
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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.