Home / 77,180.58-115,784.64-27,289.64

Finding the Fourth Proportional to 77,180.58, 115,784.64 and 27,289.64

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Solution

The fourth proportional to 77,180.58, 115,784.64 and 27,289.64 is: 40,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,180.58 : 115,784.64 = 27,289.64 : x
  2. Step 2: Convert to fraction form
    77,180.58/115,784.64 = 27,289.64/x
  3. Step 3: Cross multiply
    77,180.58x = 115,784.64 × 27,289.64
  4. Step 4: Simplify right side
    77,180.58x = 3,159,721,432.59
  5. Step 5: Solve for x
    x = 3,159,721,432.59/77,180.58
  6. Step 6: Final answer
    x = 40,939.33

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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.