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Finding the Fourth Proportional to 235,787.45, 353,736.51 and 78,015.89

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Solution

The fourth proportional to 235,787.45, 353,736.51 and 78,015.89 is: 117,042.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,787.45 : 353,736.51 = 78,015.89 : x
  2. Step 2: Convert to fraction form
    235,787.45/353,736.51 = 78,015.89/x
  3. Step 3: Cross multiply
    235,787.45x = 353,736.51 × 78,015.89
  4. Step 4: Simplify right side
    235,787.45x = 27,597,066,884.46
  5. Step 5: Solve for x
    x = 27,597,066,884.46/235,787.45
  6. Step 6: Final answer
    x = 117,042.14

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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.