Home / 78,362.37-117,563.45-36,272.81

Finding the Fourth Proportional to 78,362.37, 117,563.45 and 36,272.81

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Solution

The fourth proportional to 78,362.37, 117,563.45 and 36,272.81 is: 54,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,362.37 : 117,563.45 = 36,272.81 : x
  2. Step 2: Convert to fraction form
    78,362.37/117,563.45 = 36,272.81/x
  3. Step 3: Cross multiply
    78,362.37x = 117,563.45 × 36,272.81
  4. Step 4: Simplify right side
    78,362.37x = 4,264,356,797.34
  5. Step 5: Solve for x
    x = 4,264,356,797.34/78,362.37
  6. Step 6: Final answer
    x = 54,418.43

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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.