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Finding the Fourth Proportional to 79,765.74, 110,077.92 and 45,779.76

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Solution

The fourth proportional to 79,765.74, 110,077.92 and 45,779.76 is: 63,176.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,765.74 : 110,077.92 = 45,779.76 : x
  2. Step 2: Convert to fraction form
    79,765.74/110,077.92 = 45,779.76/x
  3. Step 3: Cross multiply
    79,765.74x = 110,077.92 × 45,779.76
  4. Step 4: Simplify right side
    79,765.74x = 5,039,340,758.90
  5. Step 5: Solve for x
    x = 5,039,340,758.90/79,765.74
  6. Step 6: Final answer
    x = 63,176.76

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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.