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Finding the Fourth Proportional to 70,651.89, 105,702.03 and 54,735.39

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Solution

The fourth proportional to 70,651.89, 105,702.03 and 54,735.39 is: 81,889.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,651.89 : 105,702.03 = 54,735.39 : x
  2. Step 2: Convert to fraction form
    70,651.89/105,702.03 = 54,735.39/x
  3. Step 3: Cross multiply
    70,651.89x = 105,702.03 × 54,735.39
  4. Step 4: Simplify right side
    70,651.89x = 5,785,641,835.84
  5. Step 5: Solve for x
    x = 5,785,641,835.84/70,651.89
  6. Step 6: Final answer
    x = 81,889.41

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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.