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Finding the Fourth Proportional to 64,919.54, 97,379.31 and 15,671.54

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Solution

The fourth proportional to 64,919.54, 97,379.31 and 15,671.54 is: 23,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,919.54 : 97,379.31 = 15,671.54 : x
  2. Step 2: Convert to fraction form
    64,919.54/97,379.31 = 15,671.54/x
  3. Step 3: Cross multiply
    64,919.54x = 97,379.31 × 15,671.54
  4. Step 4: Simplify right side
    64,919.54x = 1,526,083,751.84
  5. Step 5: Solve for x
    x = 1,526,083,751.84/64,919.54
  6. Step 6: Final answer
    x = 23,507.31

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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.