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Finding the Fourth Proportional to 72,393.15, 108,626.88 and 34,485.35

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Solution

The fourth proportional to 72,393.15, 108,626.88 and 34,485.35 is: 51,745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,393.15 : 108,626.88 = 34,485.35 : x
  2. Step 2: Convert to fraction form
    72,393.15/108,626.88 = 34,485.35/x
  3. Step 3: Cross multiply
    72,393.15x = 108,626.88 × 34,485.35
  4. Step 4: Simplify right side
    72,393.15x = 3,746,035,976.21
  5. Step 5: Solve for x
    x = 3,746,035,976.21/72,393.15
  6. Step 6: Final answer
    x = 51,745.72

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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.