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Finding the Fourth Proportional to 66,919.40, 100,311.60 and 24,772.40

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Solution

The fourth proportional to 66,919.40, 100,311.60 and 24,772.40 is: 37,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,919.40 : 100,311.60 = 24,772.40 : x
  2. Step 2: Convert to fraction form
    66,919.40/100,311.60 = 24,772.40/x
  3. Step 3: Cross multiply
    66,919.40x = 100,311.60 × 24,772.40
  4. Step 4: Simplify right side
    66,919.40x = 2,484,959,079.84
  5. Step 5: Solve for x
    x = 2,484,959,079.84/66,919.40
  6. Step 6: Final answer
    x = 37,133.61

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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.