Home / 45,814.20-68,721.30-45,199.80

Finding the Fourth Proportional to 45,814.20, 68,721.30 and 45,199.80

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Solution

The fourth proportional to 45,814.20, 68,721.30 and 45,199.80 is: 67,799.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,814.20 : 68,721.30 = 45,199.80 : x
  2. Step 2: Convert to fraction form
    45,814.20/68,721.30 = 45,199.80/x
  3. Step 3: Cross multiply
    45,814.20x = 68,721.30 × 45,199.80
  4. Step 4: Simplify right side
    45,814.20x = 3,106,189,015.74
  5. Step 5: Solve for x
    x = 3,106,189,015.74/45,814.20
  6. Step 6: Final answer
    x = 67,799.70

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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.