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Finding the Fourth Proportional to 79,213.03, 118,784.02 and 47,207.21

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Solution

The fourth proportional to 79,213.03, 118,784.02 and 47,207.21 is: 70,789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,213.03 : 118,784.02 = 47,207.21 : x
  2. Step 2: Convert to fraction form
    79,213.03/118,784.02 = 47,207.21/x
  3. Step 3: Cross multiply
    79,213.03x = 118,784.02 × 47,207.21
  4. Step 4: Simplify right side
    79,213.03x = 5,607,462,305.04
  5. Step 5: Solve for x
    x = 5,607,462,305.04/79,213.03
  6. Step 6: Final answer
    x = 70,789.65

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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.