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Finding the Fourth Proportional to 64,379,319.20, 96,568,978.80 and 30,367,095.20

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Solution

The fourth proportional to 64,379,319.20, 96,568,978.80 and 30,367,095.20 is: 45,550,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,379,319.20 : 96,568,978.80 = 30,367,095.20 : x
  2. Step 2: Convert to fraction form
    64,379,319.20/96,568,978.80 = 30,367,095.20/x
  3. Step 3: Cross multiply
    64,379,319.20x = 96,568,978.80 × 30,367,095.20
  4. Step 4: Simplify right side
    64,379,319.20x = 2,932,519,372,586,381.50
  5. Step 5: Solve for x
    x = 2,932,519,372,586,381.50/64,379,319.20
  6. Step 6: Final answer
    x = 45,550,642.80

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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.