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Finding the Fourth Proportional to 80,860.96, 110,779.90 and 77,830.72

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Solution

The fourth proportional to 80,860.96, 110,779.90 and 77,830.72 is: 106,628.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,860.96 : 110,779.90 = 77,830.72 : x
  2. Step 2: Convert to fraction form
    80,860.96/110,779.90 = 77,830.72/x
  3. Step 3: Cross multiply
    80,860.96x = 110,779.90 × 77,830.72
  4. Step 4: Simplify right side
    80,860.96x = 8,622,079,378.53
  5. Step 5: Solve for x
    x = 8,622,079,378.53/80,860.96
  6. Step 6: Final answer
    x = 106,628.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.