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Finding the Fourth Proportional to 66,478.81, 99,662.29 and 30,922.06

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Solution

The fourth proportional to 66,478.81, 99,662.29 and 30,922.06 is: 46,357.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,478.81 : 99,662.29 = 30,922.06 : x
  2. Step 2: Convert to fraction form
    66,478.81/99,662.29 = 30,922.06/x
  3. Step 3: Cross multiply
    66,478.81x = 99,662.29 × 30,922.06
  4. Step 4: Simplify right side
    66,478.81x = 3,081,763,311.12
  5. Step 5: Solve for x
    x = 3,081,763,311.12/66,478.81
  6. Step 6: Final answer
    x = 46,357.08

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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.