Home / 77,690.57-107,273.30-60,665.28

Finding the Fourth Proportional to 77,690.57, 107,273.30 and 60,665.28

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Solution

The fourth proportional to 77,690.57, 107,273.30 and 60,665.28 is: 83,765.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,690.57 : 107,273.30 = 60,665.28 : x
  2. Step 2: Convert to fraction form
    77,690.57/107,273.30 = 60,665.28/x
  3. Step 3: Cross multiply
    77,690.57x = 107,273.30 × 60,665.28
  4. Step 4: Simplify right side
    77,690.57x = 6,507,764,477.70
  5. Step 5: Solve for x
    x = 6,507,764,477.70/77,690.57
  6. Step 6: Final answer
    x = 83,765.18

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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.