Home / 78,650.39-108,561.26-53,514.47

Finding the Fourth Proportional to 78,650.39, 108,561.26 and 53,514.47

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Solution

The fourth proportional to 78,650.39, 108,561.26 and 53,514.47 is: 73,866.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,650.39 : 108,561.26 = 53,514.47 : x
  2. Step 2: Convert to fraction form
    78,650.39/108,561.26 = 53,514.47/x
  3. Step 3: Cross multiply
    78,650.39x = 108,561.26 × 53,514.47
  4. Step 4: Simplify right side
    78,650.39x = 5,809,598,291.43
  5. Step 5: Solve for x
    x = 5,809,598,291.43/78,650.39
  6. Step 6: Final answer
    x = 73,866.11

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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.