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Finding the Fourth Proportional to 79,321.78, 118,824.04 and 47,714.40

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Solution

The fourth proportional to 79,321.78, 118,824.04 and 47,714.40 is: 71,476.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,321.78 : 118,824.04 = 47,714.40 : x
  2. Step 2: Convert to fraction form
    79,321.78/118,824.04 = 47,714.40/x
  3. Step 3: Cross multiply
    79,321.78x = 118,824.04 × 47,714.40
  4. Step 4: Simplify right side
    79,321.78x = 5,669,617,774.18
  5. Step 5: Solve for x
    x = 5,669,617,774.18/79,321.78
  6. Step 6: Final answer
    x = 71,476.18

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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.