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Finding the Fourth Proportional to 60,741.96, 91,115.72 and 18,619

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Solution

The fourth proportional to 60,741.96, 91,115.72 and 18,619 is: 27,929.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,741.96 : 91,115.72 = 18,619 : x
  2. Step 2: Convert to fraction form
    60,741.96/91,115.72 = 18,619/x
  3. Step 3: Cross multiply
    60,741.96x = 91,115.72 × 18,619
  4. Step 4: Simplify right side
    60,741.96x = 1,696,483,590.68
  5. Step 5: Solve for x
    x = 1,696,483,590.68/60,741.96
  6. Step 6: Final answer
    x = 27,929.35

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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.