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Finding the Fourth Proportional to 48,430.25, 72,645.26 and 12,891.57

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Solution

The fourth proportional to 48,430.25, 72,645.26 and 12,891.57 is: 19,337.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,430.25 : 72,645.26 = 12,891.57 : x
  2. Step 2: Convert to fraction form
    48,430.25/72,645.26 = 12,891.57/x
  3. Step 3: Cross multiply
    48,430.25x = 72,645.26 × 12,891.57
  4. Step 4: Simplify right side
    48,430.25x = 936,511,390.00
  5. Step 5: Solve for x
    x = 936,511,390.00/48,430.25
  6. Step 6: Final answer
    x = 19,337.33

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.