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Finding the Fourth Proportional to 79,310.45, 118,964.64 and 19,339.22

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Solution

The fourth proportional to 79,310.45, 118,964.64 and 19,339.22 is: 29,008.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,310.45 : 118,964.64 = 19,339.22 : x
  2. Step 2: Convert to fraction form
    79,310.45/118,964.64 = 19,339.22/x
  3. Step 3: Cross multiply
    79,310.45x = 118,964.64 × 19,339.22
  4. Step 4: Simplify right side
    79,310.45x = 2,300,683,345.18
  5. Step 5: Solve for x
    x = 2,300,683,345.18/79,310.45
  6. Step 6: Final answer
    x = 29,008.58

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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.