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Finding the Fourth Proportional to 66,517.80, 99,776.70 and 49,021.80

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Solution

The fourth proportional to 66,517.80, 99,776.70 and 49,021.80 is: 73,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.80 : 99,776.70 = 49,021.80 : x
  2. Step 2: Convert to fraction form
    66,517.80/99,776.70 = 49,021.80/x
  3. Step 3: Cross multiply
    66,517.80x = 99,776.70 × 49,021.80
  4. Step 4: Simplify right side
    66,517.80x = 4,891,233,432.06
  5. Step 5: Solve for x
    x = 4,891,233,432.06/66,517.80
  6. Step 6: Final answer
    x = 73,532.70

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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.