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Finding the Fourth Proportional to 79,435.80, 118,972.24 and 37,911.96

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Solution

The fourth proportional to 79,435.80, 118,972.24 and 37,911.96 is: 56,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,435.80 : 118,972.24 = 37,911.96 : x
  2. Step 2: Convert to fraction form
    79,435.80/118,972.24 = 37,911.96/x
  3. Step 3: Cross multiply
    79,435.80x = 118,972.24 × 37,911.96
  4. Step 4: Simplify right side
    79,435.80x = 4,510,470,803.99
  5. Step 5: Solve for x
    x = 4,510,470,803.99/79,435.80
  6. Step 6: Final answer
    x = 56,781.34

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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.