Home / 43,774.40-65,661.60-12,612.80

Finding the Fourth Proportional to 43,774.40, 65,661.60 and 12,612.80

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Solution

The fourth proportional to 43,774.40, 65,661.60 and 12,612.80 is: 18,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,774.40 : 65,661.60 = 12,612.80 : x
  2. Step 2: Convert to fraction form
    43,774.40/65,661.60 = 12,612.80/x
  3. Step 3: Cross multiply
    43,774.40x = 65,661.60 × 12,612.80
  4. Step 4: Simplify right side
    43,774.40x = 828,176,628.48
  5. Step 5: Solve for x
    x = 828,176,628.48/43,774.40
  6. Step 6: Final answer
    x = 18,919.20

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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.