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Finding the Fourth Proportional to 79,405.58, 109,571.55 and 47,573.66

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Solution

The fourth proportional to 79,405.58, 109,571.55 and 47,573.66 is: 65,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,405.58 : 109,571.55 = 47,573.66 : x
  2. Step 2: Convert to fraction form
    79,405.58/109,571.55 = 47,573.66/x
  3. Step 3: Cross multiply
    79,405.58x = 109,571.55 × 47,573.66
  4. Step 4: Simplify right side
    79,405.58x = 5,212,719,665.37
  5. Step 5: Solve for x
    x = 5,212,719,665.37/79,405.58
  6. Step 6: Final answer
    x = 65,646.77

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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.