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Finding the Fourth Proportional to 64,895.78, 89,596.71 and 49,759.35

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Solution

The fourth proportional to 64,895.78, 89,596.71 and 49,759.35 is: 68,698.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,895.78 : 89,596.71 = 49,759.35 : x
  2. Step 2: Convert to fraction form
    64,895.78/89,596.71 = 49,759.35/x
  3. Step 3: Cross multiply
    64,895.78x = 89,596.71 × 49,759.35
  4. Step 4: Simplify right side
    64,895.78x = 4,458,274,051.74
  5. Step 5: Solve for x
    x = 4,458,274,051.74/64,895.78
  6. Step 6: Final answer
    x = 68,698.98

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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.