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Finding the Fourth Proportional to 66,328.35, 99,359.01 and 30,739.65

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Solution

The fourth proportional to 66,328.35, 99,359.01 and 30,739.65 is: 46,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,328.35 : 99,359.01 = 30,739.65 : x
  2. Step 2: Convert to fraction form
    66,328.35/99,359.01 = 30,739.65/x
  3. Step 3: Cross multiply
    66,328.35x = 99,359.01 × 30,739.65
  4. Step 4: Simplify right side
    66,328.35x = 3,054,261,191.75
  5. Step 5: Solve for x
    x = 3,054,261,191.75/66,328.35
  6. Step 6: Final answer
    x = 46,047.60

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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.