Home / 77,789.22-107,351.30-47,574

Finding the Fourth Proportional to 77,789.22, 107,351.30 and 47,574

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Solution

The fourth proportional to 77,789.22, 107,351.30 and 47,574 is: 65,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,789.22 : 107,351.30 = 47,574 : x
  2. Step 2: Convert to fraction form
    77,789.22/107,351.30 = 47,574/x
  3. Step 3: Cross multiply
    77,789.22x = 107,351.30 × 47,574
  4. Step 4: Simplify right side
    77,789.22x = 5,107,130,508.33
  5. Step 5: Solve for x
    x = 5,107,130,508.33/77,789.22
  6. Step 6: Final answer
    x = 65,653.45

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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.