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Finding the Fourth Proportional to 45,782.80, 68,674.20 and 14,621.20

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Solution

The fourth proportional to 45,782.80, 68,674.20 and 14,621.20 is: 21,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,782.80 : 68,674.20 = 14,621.20 : x
  2. Step 2: Convert to fraction form
    45,782.80/68,674.20 = 14,621.20/x
  3. Step 3: Cross multiply
    45,782.80x = 68,674.20 × 14,621.20
  4. Step 4: Simplify right side
    45,782.80x = 1,004,099,213.04
  5. Step 5: Solve for x
    x = 1,004,099,213.04/45,782.80
  6. Step 6: Final answer
    x = 21,931.80

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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.