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Finding the Fourth Proportional to 45,955.17, 68,905.08 and 20,650.05

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Solution

The fourth proportional to 45,955.17, 68,905.08 and 20,650.05 is: 30,962.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,955.17 : 68,905.08 = 20,650.05 : x
  2. Step 2: Convert to fraction form
    45,955.17/68,905.08 = 20,650.05/x
  3. Step 3: Cross multiply
    45,955.17x = 68,905.08 × 20,650.05
  4. Step 4: Simplify right side
    45,955.17x = 1,422,893,347.25
  5. Step 5: Solve for x
    x = 1,422,893,347.25/45,955.17
  6. Step 6: Final answer
    x = 30,962.64

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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.