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Finding the Fourth Proportional to 72,476.31, 108,745.44 and 37,440.57

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Solution

The fourth proportional to 72,476.31, 108,745.44 and 37,440.57 is: 56,176.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,476.31 : 108,745.44 = 37,440.57 : x
  2. Step 2: Convert to fraction form
    72,476.31/108,745.44 = 37,440.57/x
  3. Step 3: Cross multiply
    72,476.31x = 108,745.44 × 37,440.57
  4. Step 4: Simplify right side
    72,476.31x = 4,071,491,258.50
  5. Step 5: Solve for x
    x = 4,071,491,258.50/72,476.31
  6. Step 6: Final answer
    x = 56,176.86

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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.