Home / 66,485.33-99,644.94-42,729.65

Finding the Fourth Proportional to 66,485.33, 99,644.94 and 42,729.65

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Solution

The fourth proportional to 66,485.33, 99,644.94 and 42,729.65 is: 64,041.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.33 : 99,644.94 = 42,729.65 : x
  2. Step 2: Convert to fraction form
    66,485.33/99,644.94 = 42,729.65/x
  3. Step 3: Cross multiply
    66,485.33x = 99,644.94 × 42,729.65
  4. Step 4: Simplify right side
    66,485.33x = 4,257,792,912.25
  5. Step 5: Solve for x
    x = 4,257,792,912.25/66,485.33
  6. Step 6: Final answer
    x = 64,041.09

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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.