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Finding the Fourth Proportional to 66,771.79, 100,172.68 and 22,397.40

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Solution

The fourth proportional to 66,771.79, 100,172.68 and 22,397.40 is: 33,601.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,771.79 : 100,172.68 = 22,397.40 : x
  2. Step 2: Convert to fraction form
    66,771.79/100,172.68 = 22,397.40/x
  3. Step 3: Cross multiply
    66,771.79x = 100,172.68 × 22,397.40
  4. Step 4: Simplify right side
    66,771.79x = 2,243,607,527.04
  5. Step 5: Solve for x
    x = 2,243,607,527.04/66,771.79
  6. Step 6: Final answer
    x = 33,601.13

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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.