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Finding the Fourth Proportional to 77,661.49, 116,418.39 and 49,502.49

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Solution

The fourth proportional to 77,661.49, 116,418.39 and 49,502.49 is: 74,206.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,661.49 : 116,418.39 = 49,502.49 : x
  2. Step 2: Convert to fraction form
    77,661.49/116,418.39 = 49,502.49/x
  3. Step 3: Cross multiply
    77,661.49x = 116,418.39 × 49,502.49
  4. Step 4: Simplify right side
    77,661.49x = 5,763,000,186.79
  5. Step 5: Solve for x
    x = 5,763,000,186.79/77,661.49
  6. Step 6: Final answer
    x = 74,206.67

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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.