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Finding the Fourth Proportional to 66,816.74, 100,240.61 and 19,432.96

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Solution

The fourth proportional to 66,816.74, 100,240.61 and 19,432.96 is: 29,153.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,816.74 : 100,240.61 = 19,432.96 : x
  2. Step 2: Convert to fraction form
    66,816.74/100,240.61 = 19,432.96/x
  3. Step 3: Cross multiply
    66,816.74x = 100,240.61 × 19,432.96
  4. Step 4: Simplify right side
    66,816.74x = 1,947,971,416.74
  5. Step 5: Solve for x
    x = 1,947,971,416.74/66,816.74
  6. Step 6: Final answer
    x = 29,153.94

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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.