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Finding the Fourth Proportional to 72,980.64, 100,696.11 and 44,299.60

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Solution

The fourth proportional to 72,980.64, 100,696.11 and 44,299.60 is: 61,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,980.64 : 100,696.11 = 44,299.60 : x
  2. Step 2: Convert to fraction form
    72,980.64/100,696.11 = 44,299.60/x
  3. Step 3: Cross multiply
    72,980.64x = 100,696.11 × 44,299.60
  4. Step 4: Simplify right side
    72,980.64x = 4,460,797,142.82
  5. Step 5: Solve for x
    x = 4,460,797,142.82/72,980.64
  6. Step 6: Final answer
    x = 61,123.02

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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.