Home / 71,109.03-106,669.67-18,518.61

Finding the Fourth Proportional to 71,109.03, 106,669.67 and 18,518.61

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Solution

The fourth proportional to 71,109.03, 106,669.67 and 18,518.61 is: 27,779.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,109.03 : 106,669.67 = 18,518.61 : x
  2. Step 2: Convert to fraction form
    71,109.03/106,669.67 = 18,518.61/x
  3. Step 3: Cross multiply
    71,109.03x = 106,669.67 × 18,518.61
  4. Step 4: Simplify right side
    71,109.03x = 1,975,374,017.56
  5. Step 5: Solve for x
    x = 1,975,374,017.56/71,109.03
  6. Step 6: Final answer
    x = 27,779.51

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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.