Home / 80,923.80-121,328.10-30,984.60

Finding the Fourth Proportional to 80,923.80, 121,328.10 and 30,984.60

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Solution

The fourth proportional to 80,923.80, 121,328.10 and 30,984.60 is: 46,454.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,923.80 : 121,328.10 = 30,984.60 : x
  2. Step 2: Convert to fraction form
    80,923.80/121,328.10 = 30,984.60/x
  3. Step 3: Cross multiply
    80,923.80x = 121,328.10 × 30,984.60
  4. Step 4: Simplify right side
    80,923.80x = 3,759,302,647.26
  5. Step 5: Solve for x
    x = 3,759,302,647.26/80,923.80
  6. Step 6: Final answer
    x = 46,454.85

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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.