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Finding the Fourth Proportional to 64,751,440.80, 96,967,728.90 and 30,632,928.60

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Solution

The fourth proportional to 64,751,440.80, 96,967,728.90 and 30,632,928.60 is: 45,873,967.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,751,440.80 : 96,967,728.90 = 30,632,928.60 : x
  2. Step 2: Convert to fraction form
    64,751,440.80/96,967,728.90 = 30,632,928.60/x
  3. Step 3: Cross multiply
    64,751,440.80x = 96,967,728.90 × 30,632,928.60
  4. Step 4: Simplify right side
    64,751,440.80x = 2,970,405,515,897,857
  5. Step 5: Solve for x
    x = 2,970,405,515,897,857/64,751,440.80
  6. Step 6: Final answer
    x = 45,873,967.89

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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.