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Finding the Fourth Proportional to 84,555.33, 126,668.83 and 75,571.89

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Solution

The fourth proportional to 84,555.33, 126,668.83 and 75,571.89 is: 113,211.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,555.33 : 126,668.83 = 75,571.89 : x
  2. Step 2: Convert to fraction form
    84,555.33/126,668.83 = 75,571.89/x
  3. Step 3: Cross multiply
    84,555.33x = 126,668.83 × 75,571.89
  4. Step 4: Simplify right side
    84,555.33x = 9,572,602,887.19
  5. Step 5: Solve for x
    x = 9,572,602,887.19/84,555.33
  6. Step 6: Final answer
    x = 113,211.11

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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.