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Finding the Fourth Proportional to 64,761, 97,141.50 and 18,015.09

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Solution

The fourth proportional to 64,761, 97,141.50 and 18,015.09 is: 27,022.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,761 : 97,141.50 = 18,015.09 : x
  2. Step 2: Convert to fraction form
    64,761/97,141.50 = 18,015.09/x
  3. Step 3: Cross multiply
    64,761x = 97,141.50 × 18,015.09
  4. Step 4: Simplify right side
    64,761x = 1,750,012,865.24
  5. Step 5: Solve for x
    x = 1,750,012,865.24/64,761
  6. Step 6: Final answer
    x = 27,022.64

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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.