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Finding the Fourth Proportional to 77,879.48, 107,474.09 and 43,888.48

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Solution

The fourth proportional to 77,879.48, 107,474.09 and 43,888.48 is: 60,566.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,879.48 : 107,474.09 = 43,888.48 : x
  2. Step 2: Convert to fraction form
    77,879.48/107,474.09 = 43,888.48/x
  3. Step 3: Cross multiply
    77,879.48x = 107,474.09 × 43,888.48
  4. Step 4: Simplify right side
    77,879.48x = 4,716,874,812.77
  5. Step 5: Solve for x
    x = 4,716,874,812.77/77,879.48
  6. Step 6: Final answer
    x = 60,566.34

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1.5x scale

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.