Home / 80,766.50-121,142.81-49,168.36

Finding the Fourth Proportional to 80,766.50, 121,142.81 and 49,168.36

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Solution

The fourth proportional to 80,766.50, 121,142.81 and 49,168.36 is: 73,748.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.50 : 121,142.81 = 49,168.36 : x
  2. Step 2: Convert to fraction form
    80,766.50/121,142.81 = 49,168.36/x
  3. Step 3: Cross multiply
    80,766.50x = 121,142.81 × 49,168.36
  4. Step 4: Simplify right side
    80,766.50x = 5,956,393,567.84
  5. Step 5: Solve for x
    x = 5,956,393,567.84/80,766.50
  6. Step 6: Final answer
    x = 73,748.32

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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.