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Finding the Fourth Proportional to 66,672.06, 99,419.94 and 66,072

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Solution

The fourth proportional to 66,672.06, 99,419.94 and 66,072 is: 98,525.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,672.06 : 99,419.94 = 66,072 : x
  2. Step 2: Convert to fraction form
    66,672.06/99,419.94 = 66,072/x
  3. Step 3: Cross multiply
    66,672.06x = 99,419.94 × 66,072
  4. Step 4: Simplify right side
    66,672.06x = 6,568,874,275.68
  5. Step 5: Solve for x
    x = 6,568,874,275.68/66,672.06
  6. Step 6: Final answer
    x = 98,525.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.