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Finding the Fourth Proportional to 66,946,334.40, 100,372,262.40 and 30,572,150.40

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Solution

The fourth proportional to 66,946,334.40, 100,372,262.40 and 30,572,150.40 is: 45,836,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,946,334.40 : 100,372,262.40 = 30,572,150.40 : x
  2. Step 2: Convert to fraction form
    66,946,334.40/100,372,262.40 = 30,572,150.40/x
  3. Step 3: Cross multiply
    66,946,334.40x = 100,372,262.40 × 30,572,150.40
  4. Step 4: Simplify right side
    66,946,334.40x = 3,068,595,902,081,065
  5. Step 5: Solve for x
    x = 3,068,595,902,081,065/66,946,334.40
  6. Step 6: Final answer
    x = 45,836,653.04

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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.