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Finding the Fourth Proportional to 79,468.87, 109,677.54 and 51,256.57

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Solution

The fourth proportional to 79,468.87, 109,677.54 and 51,256.57 is: 70,740.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,468.87 : 109,677.54 = 51,256.57 : x
  2. Step 2: Convert to fraction form
    79,468.87/109,677.54 = 51,256.57/x
  3. Step 3: Cross multiply
    79,468.87x = 109,677.54 × 51,256.57
  4. Step 4: Simplify right side
    79,468.87x = 5,621,694,506.44
  5. Step 5: Solve for x
    x = 5,621,694,506.44/79,468.87
  6. Step 6: Final answer
    x = 70,740.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.