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Finding the Fourth Proportional to 79,200.69, 109,296.99 and 43,390.77

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Solution

The fourth proportional to 79,200.69, 109,296.99 and 43,390.77 is: 59,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.69 : 109,296.99 = 43,390.77 : x
  2. Step 2: Convert to fraction form
    79,200.69/109,296.99 = 43,390.77/x
  3. Step 3: Cross multiply
    79,200.69x = 109,296.99 × 43,390.77
  4. Step 4: Simplify right side
    79,200.69x = 4,742,480,554.78
  5. Step 5: Solve for x
    x = 4,742,480,554.78/79,200.69
  6. Step 6: Final answer
    x = 59,879.28

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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.