Home / 54,091.20-81,136.80-39,230.40

Finding the Fourth Proportional to 54,091.20, 81,136.80 and 39,230.40

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Solution

The fourth proportional to 54,091.20, 81,136.80 and 39,230.40 is: 58,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,091.20 : 81,136.80 = 39,230.40 : x
  2. Step 2: Convert to fraction form
    54,091.20/81,136.80 = 39,230.40/x
  3. Step 3: Cross multiply
    54,091.20x = 81,136.80 × 39,230.40
  4. Step 4: Simplify right side
    54,091.20x = 3,183,029,118.72
  5. Step 5: Solve for x
    x = 3,183,029,118.72/54,091.20
  6. Step 6: Final answer
    x = 58,845.60

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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.