Home / 102,761.60-141,809.22-57,440.48

Finding the Fourth Proportional to 102,761.60, 141,809.22 and 57,440.48

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Solution

The fourth proportional to 102,761.60, 141,809.22 and 57,440.48 is: 79,266.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,761.60 : 141,809.22 = 57,440.48 : x
  2. Step 2: Convert to fraction form
    102,761.60/141,809.22 = 57,440.48/x
  3. Step 3: Cross multiply
    102,761.60x = 141,809.22 × 57,440.48
  4. Step 4: Simplify right side
    102,761.60x = 8,145,589,665.23
  5. Step 5: Solve for x
    x = 8,145,589,665.23/102,761.60
  6. Step 6: Final answer
    x = 79,266.86

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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.