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Finding the Fourth Proportional to 79,447.40, 118,976.70 and 37,845.80

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Solution

The fourth proportional to 79,447.40, 118,976.70 and 37,845.80 is: 56,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,447.40 : 118,976.70 = 37,845.80 : x
  2. Step 2: Convert to fraction form
    79,447.40/118,976.70 = 37,845.80/x
  3. Step 3: Cross multiply
    79,447.40x = 118,976.70 × 37,845.80
  4. Step 4: Simplify right side
    79,447.40x = 4,502,768,392.86
  5. Step 5: Solve for x
    x = 4,502,768,392.86/79,447.40
  6. Step 6: Final answer
    x = 56,676.10

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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.