Home / 78,837.26-108,761.29-48,211.70

Finding the Fourth Proportional to 78,837.26, 108,761.29 and 48,211.70

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Solution

The fourth proportional to 78,837.26, 108,761.29 and 48,211.70 is: 66,511.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,837.26 : 108,761.29 = 48,211.70 : x
  2. Step 2: Convert to fraction form
    78,837.26/108,761.29 = 48,211.70/x
  3. Step 3: Cross multiply
    78,837.26x = 108,761.29 × 48,211.70
  4. Step 4: Simplify right side
    78,837.26x = 5,243,566,020.76
  5. Step 5: Solve for x
    x = 5,243,566,020.76/78,837.26
  6. Step 6: Final answer
    x = 66,511.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.