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Finding the Fourth Proportional to 66,722.56, 100,081.92 and 16,802.56

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Solution

The fourth proportional to 66,722.56, 100,081.92 and 16,802.56 is: 25,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.56 : 100,081.92 = 16,802.56 : x
  2. Step 2: Convert to fraction form
    66,722.56/100,081.92 = 16,802.56/x
  3. Step 3: Cross multiply
    66,722.56x = 100,081.92 × 16,802.56
  4. Step 4: Simplify right side
    66,722.56x = 1,681,632,465.72
  5. Step 5: Solve for x
    x = 1,681,632,465.72/66,722.56
  6. Step 6: Final answer
    x = 25,203.36

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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.