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Finding the Fourth Proportional to 66,036, 98,942.19 and 47,220.51

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Solution

The fourth proportional to 66,036, 98,942.19 and 47,220.51 is: 70,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,036 : 98,942.19 = 47,220.51 : x
  2. Step 2: Convert to fraction form
    66,036/98,942.19 = 47,220.51/x
  3. Step 3: Cross multiply
    66,036x = 98,942.19 × 47,220.51
  4. Step 4: Simplify right side
    66,036x = 4,672,100,672.32
  5. Step 5: Solve for x
    x = 4,672,100,672.32/66,036
  6. Step 6: Final answer
    x = 70,750.81

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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.