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Finding the Fourth Proportional to 69,579.72, 104,369.64 and 28,017

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Solution

The fourth proportional to 69,579.72, 104,369.64 and 28,017 is: 42,025.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,579.72 : 104,369.64 = 28,017 : x
  2. Step 2: Convert to fraction form
    69,579.72/104,369.64 = 28,017/x
  3. Step 3: Cross multiply
    69,579.72x = 104,369.64 × 28,017
  4. Step 4: Simplify right side
    69,579.72x = 2,924,124,203.88
  5. Step 5: Solve for x
    x = 2,924,124,203.88/69,579.72
  6. Step 6: Final answer
    x = 42,025.52

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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.