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Finding the Fourth Proportional to 79,474.64, 119,234.28 and 64,646.48

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Solution

The fourth proportional to 79,474.64, 119,234.28 and 64,646.48 is: 96,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,474.64 : 119,234.28 = 64,646.48 : x
  2. Step 2: Convert to fraction form
    79,474.64/119,234.28 = 64,646.48/x
  3. Step 3: Cross multiply
    79,474.64x = 119,234.28 × 64,646.48
  4. Step 4: Simplify right side
    79,474.64x = 7,708,076,497.33
  5. Step 5: Solve for x
    x = 7,708,076,497.33/79,474.64
  6. Step 6: Final answer
    x = 96,987.88

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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.