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Finding the Fourth Proportional to 72,979.22, 100,702.76 and 41,146.22

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Solution

The fourth proportional to 72,979.22, 100,702.76 and 41,146.22 is: 56,776.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,979.22 : 100,702.76 = 41,146.22 : x
  2. Step 2: Convert to fraction form
    72,979.22/100,702.76 = 41,146.22/x
  3. Step 3: Cross multiply
    72,979.22x = 100,702.76 × 41,146.22
  4. Step 4: Simplify right side
    72,979.22x = 4,143,537,917.57
  5. Step 5: Solve for x
    x = 4,143,537,917.57/72,979.22
  6. Step 6: Final answer
    x = 56,776.96

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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.