Home / 77,063.47-106,295.09-66,974.72

Finding the Fourth Proportional to 77,063.47, 106,295.09 and 66,974.72

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Solution

The fourth proportional to 77,063.47, 106,295.09 and 66,974.72 is: 92,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,063.47 : 106,295.09 = 66,974.72 : x
  2. Step 2: Convert to fraction form
    77,063.47/106,295.09 = 66,974.72/x
  3. Step 3: Cross multiply
    77,063.47x = 106,295.09 × 66,974.72
  4. Step 4: Simplify right side
    77,063.47x = 7,119,083,023.78
  5. Step 5: Solve for x
    x = 7,119,083,023.78/77,063.47
  6. Step 6: Final answer
    x = 92,379.48

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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.