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Finding the Fourth Proportional to 77,015.43, 115,566.35 and 41,957.55

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Solution

The fourth proportional to 77,015.43, 115,566.35 and 41,957.55 is: 62,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,015.43 : 115,566.35 = 41,957.55 : x
  2. Step 2: Convert to fraction form
    77,015.43/115,566.35 = 41,957.55/x
  3. Step 3: Cross multiply
    77,015.43x = 115,566.35 × 41,957.55
  4. Step 4: Simplify right side
    77,015.43x = 4,848,880,698.65
  5. Step 5: Solve for x
    x = 4,848,880,698.65/77,015.43
  6. Step 6: Final answer
    x = 62,959.86

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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.