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Finding the Fourth Proportional to 79,964.76, 110,360.70 and 66,512.28

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Solution

The fourth proportional to 79,964.76, 110,360.70 and 66,512.28 is: 91,794.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,964.76 : 110,360.70 = 66,512.28 : x
  2. Step 2: Convert to fraction form
    79,964.76/110,360.70 = 66,512.28/x
  3. Step 3: Cross multiply
    79,964.76x = 110,360.70 × 66,512.28
  4. Step 4: Simplify right side
    79,964.76x = 7,340,341,779.40
  5. Step 5: Solve for x
    x = 7,340,341,779.40/79,964.76
  6. Step 6: Final answer
    x = 91,794.71

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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.