Home / 66,607,790.70-99,769,968.45-55,270,382.70

Finding the Fourth Proportional to 66,607,790.70, 99,769,968.45 and 55,270,382.70

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Solution

The fourth proportional to 66,607,790.70, 99,769,968.45 and 55,270,382.70 is: 82,787,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,607,790.70 : 99,769,968.45 = 55,270,382.70 : x
  2. Step 2: Convert to fraction form
    66,607,790.70/99,769,968.45 = 55,270,382.70/x
  3. Step 3: Cross multiply
    66,607,790.70x = 99,769,968.45 × 55,270,382.70
  4. Step 4: Simplify right side
    66,607,790.70x = 5,514,324,338,198,426
  5. Step 5: Solve for x
    x = 5,514,324,338,198,426/66,607,790.70
  6. Step 6: Final answer
    x = 82,787,978.41

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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.