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Finding the Fourth Proportional to 66,304,310.40, 99,456,465.60 and 48,388,406.40

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Solution

The fourth proportional to 66,304,310.40, 99,456,465.60 and 48,388,406.40 is: 72,582,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,304,310.40 : 99,456,465.60 = 48,388,406.40 : x
  2. Step 2: Convert to fraction form
    66,304,310.40/99,456,465.60 = 48,388,406.40/x
  3. Step 3: Cross multiply
    66,304,310.40x = 99,456,465.60 × 48,388,406.40
  4. Step 4: Simplify right side
    66,304,310.40x = 4,812,539,876,560,419
  5. Step 5: Solve for x
    x = 4,812,539,876,560,419/66,304,310.40
  6. Step 6: Final answer
    x = 72,582,609.60

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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.