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Finding the Fourth Proportional to 56,394.50, 84,601.53 and 18,958.19

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Solution

The fourth proportional to 56,394.50, 84,601.53 and 18,958.19 is: 28,440.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,394.50 : 84,601.53 = 18,958.19 : x
  2. Step 2: Convert to fraction form
    56,394.50/84,601.53 = 18,958.19/x
  3. Step 3: Cross multiply
    56,394.50x = 84,601.53 × 18,958.19
  4. Step 4: Simplify right side
    56,394.50x = 1,603,891,457.02
  5. Step 5: Solve for x
    x = 1,603,891,457.02/56,394.50
  6. Step 6: Final answer
    x = 28,440.57

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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.