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Finding the Fourth Proportional to 66,722.58, 100,083.87 and 40,434.84

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Solution

The fourth proportional to 66,722.58, 100,083.87 and 40,434.84 is: 60,652.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,722.58 : 100,083.87 = 40,434.84 : x
  2. Step 2: Convert to fraction form
    66,722.58/100,083.87 = 40,434.84/x
  3. Step 3: Cross multiply
    66,722.58x = 100,083.87 × 40,434.84
  4. Step 4: Simplify right side
    66,722.58x = 4,046,875,270.03
  5. Step 5: Solve for x
    x = 4,046,875,270.03/66,722.58
  6. Step 6: Final answer
    x = 60,652.26

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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.