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Finding the Fourth Proportional to 66,478,625.60, 99,661,951.20 and 34,565,921.60

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Solution

The fourth proportional to 66,478,625.60, 99,661,951.20 and 34,565,921.60 is: 51,819,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,478,625.60 : 99,661,951.20 = 34,565,921.60 : x
  2. Step 2: Convert to fraction form
    66,478,625.60/99,661,951.20 = 34,565,921.60/x
  3. Step 3: Cross multiply
    66,478,625.60x = 99,661,951.20 × 34,565,921.60
  4. Step 4: Simplify right side
    66,478,625.60x = 3,444,907,191,682,226
  5. Step 5: Solve for x
    x = 3,444,907,191,682,226/66,478,625.60
  6. Step 6: Final answer
    x = 51,819,771.55

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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.