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Finding the Fourth Proportional to 66,814.30, 100,221.45 and 43,194.70

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Solution

The fourth proportional to 66,814.30, 100,221.45 and 43,194.70 is: 64,792.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,814.30 : 100,221.45 = 43,194.70 : x
  2. Step 2: Convert to fraction form
    66,814.30/100,221.45 = 43,194.70/x
  3. Step 3: Cross multiply
    66,814.30x = 100,221.45 × 43,194.70
  4. Step 4: Simplify right side
    66,814.30x = 4,329,035,466.32
  5. Step 5: Solve for x
    x = 4,329,035,466.32/66,814.30
  6. Step 6: Final answer
    x = 64,792.05

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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.