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Finding the Fourth Proportional to 66,809.20, 100,213.80 and 62,402.80

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Solution

The fourth proportional to 66,809.20, 100,213.80 and 62,402.80 is: 93,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809.20 : 100,213.80 = 62,402.80 : x
  2. Step 2: Convert to fraction form
    66,809.20/100,213.80 = 62,402.80/x
  3. Step 3: Cross multiply
    66,809.20x = 100,213.80 × 62,402.80
  4. Step 4: Simplify right side
    66,809.20x = 6,253,621,718.64
  5. Step 5: Solve for x
    x = 6,253,621,718.64/66,809.20
  6. Step 6: Final answer
    x = 93,604.20

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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.