Home / 49,786.40-74,679.60-45,984.80

Finding the Fourth Proportional to 49,786.40, 74,679.60 and 45,984.80

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Solution

The fourth proportional to 49,786.40, 74,679.60 and 45,984.80 is: 68,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,786.40 : 74,679.60 = 45,984.80 : x
  2. Step 2: Convert to fraction form
    49,786.40/74,679.60 = 45,984.80/x
  3. Step 3: Cross multiply
    49,786.40x = 74,679.60 × 45,984.80
  4. Step 4: Simplify right side
    49,786.40x = 3,434,126,470.08
  5. Step 5: Solve for x
    x = 3,434,126,470.08/49,786.40
  6. Step 6: Final answer
    x = 68,977.20

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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.