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Finding the Fourth Proportional to 45,814.51, 68,736.49 and 21,808.99

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Solution

The fourth proportional to 45,814.51, 68,736.49 and 21,808.99 is: 32,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,814.51 : 68,736.49 = 21,808.99 : x
  2. Step 2: Convert to fraction form
    45,814.51/68,736.49 = 21,808.99/x
  3. Step 3: Cross multiply
    45,814.51x = 68,736.49 × 21,808.99
  4. Step 4: Simplify right side
    45,814.51x = 1,499,073,423.05
  5. Step 5: Solve for x
    x = 1,499,073,423.05/45,814.51
  6. Step 6: Final answer
    x = 32,720.50

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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.