Home / 78,917.44-118,334.67-53,964.63

Finding the Fourth Proportional to 78,917.44, 118,334.67 and 53,964.63

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Solution

The fourth proportional to 78,917.44, 118,334.67 and 53,964.63 is: 80,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,917.44 : 118,334.67 = 53,964.63 : x
  2. Step 2: Convert to fraction form
    78,917.44/118,334.67 = 53,964.63/x
  3. Step 3: Cross multiply
    78,917.44x = 118,334.67 × 53,964.63
  4. Step 4: Simplify right side
    78,917.44x = 6,385,886,783.91
  5. Step 5: Solve for x
    x = 6,385,886,783.91/78,917.44
  6. Step 6: Final answer
    x = 80,918.58

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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.