Home / 55,278.40-76,286.12-31,404.32

Finding the Fourth Proportional to 55,278.40, 76,286.12 and 31,404.32

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Solution

The fourth proportional to 55,278.40, 76,286.12 and 31,404.32 is: 43,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.40 : 76,286.12 = 31,404.32 : x
  2. Step 2: Convert to fraction form
    55,278.40/76,286.12 = 31,404.32/x
  3. Step 3: Cross multiply
    55,278.40x = 76,286.12 × 31,404.32
  4. Step 4: Simplify right side
    55,278.40x = 2,395,713,724.04
  5. Step 5: Solve for x
    x = 2,395,713,724.04/55,278.40
  6. Step 6: Final answer
    x = 43,339.06

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1.5x scale

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.