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Finding the Fourth Proportional to 45,784.86, 68,700.72 and 21,796.31

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Solution

The fourth proportional to 45,784.86, 68,700.72 and 21,796.31 is: 32,705.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,784.86 : 68,700.72 = 21,796.31 : x
  2. Step 2: Convert to fraction form
    45,784.86/68,700.72 = 21,796.31/x
  3. Step 3: Cross multiply
    45,784.86x = 68,700.72 × 21,796.31
  4. Step 4: Simplify right side
    45,784.86x = 1,497,421,846.84
  5. Step 5: Solve for x
    x = 1,497,421,846.84/45,784.86
  6. Step 6: Final answer
    x = 32,705.62

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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.