Home / 80,739.74-121,074.30-40,734.11

Finding the Fourth Proportional to 80,739.74, 121,074.30 and 40,734.11

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Solution

The fourth proportional to 80,739.74, 121,074.30 and 40,734.11 is: 61,083.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,739.74 : 121,074.30 = 40,734.11 : x
  2. Step 2: Convert to fraction form
    80,739.74/121,074.30 = 40,734.11/x
  3. Step 3: Cross multiply
    80,739.74x = 121,074.30 × 40,734.11
  4. Step 4: Simplify right side
    80,739.74x = 4,931,853,249.00
  5. Step 5: Solve for x
    x = 4,931,853,249.00/80,739.74
  6. Step 6: Final answer
    x = 61,083.35

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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.