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Finding the Fourth Proportional to 66,661.39, 99,992.15 and 26,698.38

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Solution

The fourth proportional to 66,661.39, 99,992.15 and 26,698.38 is: 40,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,661.39 : 99,992.15 = 26,698.38 : x
  2. Step 2: Convert to fraction form
    66,661.39/99,992.15 = 26,698.38/x
  3. Step 3: Cross multiply
    66,661.39x = 99,992.15 × 26,698.38
  4. Step 4: Simplify right side
    66,661.39x = 2,669,628,417.72
  5. Step 5: Solve for x
    x = 2,669,628,417.72/66,661.39
  6. Step 6: Final answer
    x = 40,047.60

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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.