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Finding the Fourth Proportional to 45,630.70, 68,450.38 and 18,971.08

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Solution

The fourth proportional to 45,630.70, 68,450.38 and 18,971.08 is: 28,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,630.70 : 68,450.38 = 18,971.08 : x
  2. Step 2: Convert to fraction form
    45,630.70/68,450.38 = 18,971.08/x
  3. Step 3: Cross multiply
    45,630.70x = 68,450.38 × 18,971.08
  4. Step 4: Simplify right side
    45,630.70x = 1,298,577,635.01
  5. Step 5: Solve for x
    x = 1,298,577,635.01/45,630.70
  6. Step 6: Final answer
    x = 28,458.42

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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.