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Finding the Fourth Proportional to 45,783.82, 68,659.62 and 21,765.16

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Solution

The fourth proportional to 45,783.82, 68,659.62 and 21,765.16 is: 32,640.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,783.82 : 68,659.62 = 21,765.16 : x
  2. Step 2: Convert to fraction form
    45,783.82/68,659.62 = 21,765.16/x
  3. Step 3: Cross multiply
    45,783.82x = 68,659.62 × 21,765.16
  4. Step 4: Simplify right side
    45,783.82x = 1,494,387,614.84
  5. Step 5: Solve for x
    x = 1,494,387,614.84/45,783.82
  6. Step 6: Final answer
    x = 32,640.08

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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.