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Finding the Fourth Proportional to 65,979,080.80, 98,993,504.40 and 31,930,568.80

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Solution

The fourth proportional to 65,979,080.80, 98,993,504.40 and 31,930,568.80 is: 47,907,895.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,979,080.80 : 98,993,504.40 = 31,930,568.80 : x
  2. Step 2: Convert to fraction form
    65,979,080.80/98,993,504.40 = 31,930,568.80/x
  3. Step 3: Cross multiply
    65,979,080.80x = 98,993,504.40 × 31,930,568.80
  4. Step 4: Simplify right side
    65,979,080.80x = 3,160,918,902,997,303
  5. Step 5: Solve for x
    x = 3,160,918,902,997,303/65,979,080.80
  6. Step 6: Final answer
    x = 47,907,895.42

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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.