Home / 69,077-103,618.20-21,724.40

Finding the Fourth Proportional to 69,077, 103,618.20 and 21,724.40

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Solution

The fourth proportional to 69,077, 103,618.20 and 21,724.40 is: 32,587.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,077 : 103,618.20 = 21,724.40 : x
  2. Step 2: Convert to fraction form
    69,077/103,618.20 = 21,724.40/x
  3. Step 3: Cross multiply
    69,077x = 103,618.20 × 21,724.40
  4. Step 4: Simplify right side
    69,077x = 2,251,043,224.08
  5. Step 5: Solve for x
    x = 2,251,043,224.08/69,077
  6. Step 6: Final answer
    x = 32,587.45

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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.