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Finding the Fourth Proportional to 65,779.21, 98,662.67 and 18,398.54

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Solution

The fourth proportional to 65,779.21, 98,662.67 and 18,398.54 is: 27,596.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,779.21 : 98,662.67 = 18,398.54 : x
  2. Step 2: Convert to fraction form
    65,779.21/98,662.67 = 18,398.54/x
  3. Step 3: Cross multiply
    65,779.21x = 98,662.67 × 18,398.54
  4. Step 4: Simplify right side
    65,779.21x = 1,815,249,080.50
  5. Step 5: Solve for x
    x = 1,815,249,080.50/65,779.21
  6. Step 6: Final answer
    x = 27,596.09

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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.