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Finding the Fourth Proportional to 66,697.20, 100,013.40 and 37,083.60

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Solution

The fourth proportional to 66,697.20, 100,013.40 and 37,083.60 is: 55,607.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,697.20 : 100,013.40 = 37,083.60 : x
  2. Step 2: Convert to fraction form
    66,697.20/100,013.40 = 37,083.60/x
  3. Step 3: Cross multiply
    66,697.20x = 100,013.40 × 37,083.60
  4. Step 4: Simplify right side
    66,697.20x = 3,708,856,920.24
  5. Step 5: Solve for x
    x = 3,708,856,920.24/66,697.20
  6. Step 6: Final answer
    x = 55,607.39

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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.