Home / 40,172.40-60,268.20-19,378.80

Finding the Fourth Proportional to 40,172.40, 60,268.20 and 19,378.80

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Solution

The fourth proportional to 40,172.40, 60,268.20 and 19,378.80 is: 29,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,172.40 : 60,268.20 = 19,378.80 : x
  2. Step 2: Convert to fraction form
    40,172.40/60,268.20 = 19,378.80/x
  3. Step 3: Cross multiply
    40,172.40x = 60,268.20 × 19,378.80
  4. Step 4: Simplify right side
    40,172.40x = 1,167,925,394.16
  5. Step 5: Solve for x
    x = 1,167,925,394.16/40,172.40
  6. Step 6: Final answer
    x = 29,072.83

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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.