Home / 71,188.20-106,778.52-21,268.80

Finding the Fourth Proportional to 71,188.20, 106,778.52 and 21,268.80

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Solution

The fourth proportional to 71,188.20, 106,778.52 and 21,268.80 is: 31,902.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,188.20 : 106,778.52 = 21,268.80 : x
  2. Step 2: Convert to fraction form
    71,188.20/106,778.52 = 21,268.80/x
  3. Step 3: Cross multiply
    71,188.20x = 106,778.52 × 21,268.80
  4. Step 4: Simplify right side
    71,188.20x = 2,271,050,986.18
  5. Step 5: Solve for x
    x = 2,271,050,986.18/71,188.20
  6. Step 6: Final answer
    x = 31,902.07

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1.5x scale

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.