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Finding the Fourth Proportional to 78,673.80, 108,707.94 and 62,888.52

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Solution

The fourth proportional to 78,673.80, 108,707.94 and 62,888.52 is: 86,896.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,673.80 : 108,707.94 = 62,888.52 : x
  2. Step 2: Convert to fraction form
    78,673.80/108,707.94 = 62,888.52/x
  3. Step 3: Cross multiply
    78,673.80x = 108,707.94 × 62,888.52
  4. Step 4: Simplify right side
    78,673.80x = 6,836,481,458.85
  5. Step 5: Solve for x
    x = 6,836,481,458.85/78,673.80
  6. Step 6: Final answer
    x = 86,896.55

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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.