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Finding the Fourth Proportional to 84,040.86, 115,974.82 and 45,800.70

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Solution

The fourth proportional to 84,040.86, 115,974.82 and 45,800.70 is: 63,204.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,040.86 : 115,974.82 = 45,800.70 : x
  2. Step 2: Convert to fraction form
    84,040.86/115,974.82 = 45,800.70/x
  3. Step 3: Cross multiply
    84,040.86x = 115,974.82 × 45,800.70
  4. Step 4: Simplify right side
    84,040.86x = 5,311,727,938.37
  5. Step 5: Solve for x
    x = 5,311,727,938.37/84,040.86
  6. Step 6: Final answer
    x = 63,204.11

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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.