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Finding the Fourth Proportional to 66,869,792.84, 100,304,689.26 and 53,491,651.40

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Solution

The fourth proportional to 66,869,792.84, 100,304,689.26 and 53,491,651.40 is: 80,237,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869,792.84 : 100,304,689.26 = 53,491,651.40 : x
  2. Step 2: Convert to fraction form
    66,869,792.84/100,304,689.26 = 53,491,651.40/x
  3. Step 3: Cross multiply
    66,869,792.84x = 100,304,689.26 × 53,491,651.40
  4. Step 4: Simplify right side
    66,869,792.84x = 5,365,463,471,681,244
  5. Step 5: Solve for x
    x = 5,365,463,471,681,244/66,869,792.84
  6. Step 6: Final answer
    x = 80,237,477.10

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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.