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Finding the Fourth Proportional to 71,185.51, 106,779.30 and 18,595

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Solution

The fourth proportional to 71,185.51, 106,779.30 and 18,595 is: 27,892.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,185.51 : 106,779.30 = 18,595 : x
  2. Step 2: Convert to fraction form
    71,185.51/106,779.30 = 18,595/x
  3. Step 3: Cross multiply
    71,185.51x = 106,779.30 × 18,595
  4. Step 4: Simplify right side
    71,185.51x = 1,985,561,083.50
  5. Step 5: Solve for x
    x = 1,985,561,083.50/71,185.51
  6. Step 6: Final answer
    x = 27,892.77

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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.