Home / 55,272.64-76,277.12-31,400

Finding the Fourth Proportional to 55,272.64, 76,277.12 and 31,400

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Solution

The fourth proportional to 55,272.64, 76,277.12 and 31,400 is: 43,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,272.64 : 76,277.12 = 31,400 : x
  2. Step 2: Convert to fraction form
    55,272.64/76,277.12 = 31,400/x
  3. Step 3: Cross multiply
    55,272.64x = 76,277.12 × 31,400
  4. Step 4: Simplify right side
    55,272.64x = 2,395,101,568
  5. Step 5: Solve for x
    x = 2,395,101,568/55,272.64
  6. Step 6: Final answer
    x = 43,332.50

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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.