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Finding the Fourth Proportional to 110,009.80, 165,057.90 and 43,438.60

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Solution

The fourth proportional to 110,009.80, 165,057.90 and 43,438.60 is: 65,174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,009.80 : 165,057.90 = 43,438.60 : x
  2. Step 2: Convert to fraction form
    110,009.80/165,057.90 = 43,438.60/x
  3. Step 3: Cross multiply
    110,009.80x = 165,057.90 × 43,438.60
  4. Step 4: Simplify right side
    110,009.80x = 7,169,884,094.94
  5. Step 5: Solve for x
    x = 7,169,884,094.94/110,009.80
  6. Step 6: Final answer
    x = 65,174.96

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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.