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Finding the Fourth Proportional to 79,310, 118,983.18 and 34,940.12

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Solution

The fourth proportional to 79,310, 118,983.18 and 34,940.12 is: 52,418.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,310 : 118,983.18 = 34,940.12 : x
  2. Step 2: Convert to fraction form
    79,310/118,983.18 = 34,940.12/x
  3. Step 3: Cross multiply
    79,310x = 118,983.18 × 34,940.12
  4. Step 4: Simplify right side
    79,310x = 4,157,286,587.18
  5. Step 5: Solve for x
    x = 4,157,286,587.18/79,310
  6. Step 6: Final answer
    x = 52,418.19

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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.