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Finding the Fourth Proportional to 64,661,640.60, 96,992,460.90 and 57,646,619.40

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Solution

The fourth proportional to 64,661,640.60, 96,992,460.90 and 57,646,619.40 is: 86,469,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,661,640.60 : 96,992,460.90 = 57,646,619.40 : x
  2. Step 2: Convert to fraction form
    64,661,640.60/96,992,460.90 = 57,646,619.40/x
  3. Step 3: Cross multiply
    64,661,640.60x = 96,992,460.90 × 57,646,619.40
  4. Step 4: Simplify right side
    64,661,640.60x = 5,591,287,478,171,682
  5. Step 5: Solve for x
    x = 5,591,287,478,171,682/64,661,640.60
  6. Step 6: Final answer
    x = 86,469,929.10

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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.