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Finding the Fourth Proportional to 45,816.84, 68,724.45 and 19,539.63

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Solution

The fourth proportional to 45,816.84, 68,724.45 and 19,539.63 is: 29,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,816.84 : 68,724.45 = 19,539.63 : x
  2. Step 2: Convert to fraction form
    45,816.84/68,724.45 = 19,539.63/x
  3. Step 3: Cross multiply
    45,816.84x = 68,724.45 × 19,539.63
  4. Step 4: Simplify right side
    45,816.84x = 1,342,850,324.95
  5. Step 5: Solve for x
    x = 1,342,850,324.95/45,816.84
  6. Step 6: Final answer
    x = 29,309.10

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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.