Home / 77,028-115,208.46-45,362.58

Finding the Fourth Proportional to 77,028, 115,208.46 and 45,362.58

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Solution

The fourth proportional to 77,028, 115,208.46 and 45,362.58 is: 67,847.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,028 : 115,208.46 = 45,362.58 : x
  2. Step 2: Convert to fraction form
    77,028/115,208.46 = 45,362.58/x
  3. Step 3: Cross multiply
    77,028x = 115,208.46 × 45,362.58
  4. Step 4: Simplify right side
    77,028x = 5,226,152,983.43
  5. Step 5: Solve for x
    x = 5,226,152,983.43/77,028
  6. Step 6: Final answer
    x = 67,847.44

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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.