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Finding the Fourth Proportional to 74,201.54, 102,392.97 and 43,985.30

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Solution

The fourth proportional to 74,201.54, 102,392.97 and 43,985.30 is: 60,696.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,201.54 : 102,392.97 = 43,985.30 : x
  2. Step 2: Convert to fraction form
    74,201.54/102,392.97 = 43,985.30/x
  3. Step 3: Cross multiply
    74,201.54x = 102,392.97 × 43,985.30
  4. Step 4: Simplify right side
    74,201.54x = 4,503,785,503.34
  5. Step 5: Solve for x
    x = 4,503,785,503.34/74,201.54
  6. Step 6: Final answer
    x = 60,696.66

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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.