Home / 77,138.24-115,656.48-50,763.20

Finding the Fourth Proportional to 77,138.24, 115,656.48 and 50,763.20

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Solution

The fourth proportional to 77,138.24, 115,656.48 and 50,763.20 is: 76,111.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,138.24 : 115,656.48 = 50,763.20 : x
  2. Step 2: Convert to fraction form
    77,138.24/115,656.48 = 50,763.20/x
  3. Step 3: Cross multiply
    77,138.24x = 115,656.48 × 50,763.20
  4. Step 4: Simplify right side
    77,138.24x = 5,871,093,025.54
  5. Step 5: Solve for x
    x = 5,871,093,025.54/77,138.24
  6. Step 6: Final answer
    x = 76,111.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.