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Finding the Fourth Proportional to 74,783.44, 103,201.20 and 42,954.40

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Solution

The fourth proportional to 74,783.44, 103,201.20 and 42,954.40 is: 59,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,783.44 : 103,201.20 = 42,954.40 : x
  2. Step 2: Convert to fraction form
    74,783.44/103,201.20 = 42,954.40/x
  3. Step 3: Cross multiply
    74,783.44x = 103,201.20 × 42,954.40
  4. Step 4: Simplify right side
    74,783.44x = 4,432,945,625.28
  5. Step 5: Solve for x
    x = 4,432,945,625.28/74,783.44
  6. Step 6: Final answer
    x = 59,277.10

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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.