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Finding the Fourth Proportional to 49,784.40, 74,676.60 and 18,615.60

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Solution

The fourth proportional to 49,784.40, 74,676.60 and 18,615.60 is: 27,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,784.40 : 74,676.60 = 18,615.60 : x
  2. Step 2: Convert to fraction form
    49,784.40/74,676.60 = 18,615.60/x
  3. Step 3: Cross multiply
    49,784.40x = 74,676.60 × 18,615.60
  4. Step 4: Simplify right side
    49,784.40x = 1,390,149,714.96
  5. Step 5: Solve for x
    x = 1,390,149,714.96/49,784.40
  6. Step 6: Final answer
    x = 27,923.40

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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.