Home / 91,443.84-126,198.40-51,161.28

Finding the Fourth Proportional to 91,443.84, 126,198.40 and 51,161.28

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Solution

The fourth proportional to 91,443.84, 126,198.40 and 51,161.28 is: 70,605.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,443.84 : 126,198.40 = 51,161.28 : x
  2. Step 2: Convert to fraction form
    91,443.84/126,198.40 = 51,161.28/x
  3. Step 3: Cross multiply
    91,443.84x = 126,198.40 × 51,161.28
  4. Step 4: Simplify right side
    91,443.84x = 6,456,471,677.95
  5. Step 5: Solve for x
    x = 6,456,471,677.95/91,443.84
  6. Step 6: Final answer
    x = 70,605.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.