Home / 57,779.20-86,647.20-40,196.80

Finding the Fourth Proportional to 57,779.20, 86,647.20 and 40,196.80

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Solution

The fourth proportional to 57,779.20, 86,647.20 and 40,196.80 is: 60,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,779.20 : 86,647.20 = 40,196.80 : x
  2. Step 2: Convert to fraction form
    57,779.20/86,647.20 = 40,196.80/x
  3. Step 3: Cross multiply
    57,779.20x = 86,647.20 × 40,196.80
  4. Step 4: Simplify right side
    57,779.20x = 3,482,940,168.96
  5. Step 5: Solve for x
    x = 3,482,940,168.96/57,779.20
  6. Step 6: Final answer
    x = 60,280.17

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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.