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Finding the Fourth Proportional to 66,007.40, 99,020.70 and 21,626.60

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Solution

The fourth proportional to 66,007.40, 99,020.70 and 21,626.60 is: 32,443.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,007.40 : 99,020.70 = 21,626.60 : x
  2. Step 2: Convert to fraction form
    66,007.40/99,020.70 = 21,626.60/x
  3. Step 3: Cross multiply
    66,007.40x = 99,020.70 × 21,626.60
  4. Step 4: Simplify right side
    66,007.40x = 2,141,481,070.62
  5. Step 5: Solve for x
    x = 2,141,481,070.62/66,007.40
  6. Step 6: Final answer
    x = 32,443.05

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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.