Home / 54,286.40-81,429.60-45,538.40

Finding the Fourth Proportional to 54,286.40, 81,429.60 and 45,538.40

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Solution

The fourth proportional to 54,286.40, 81,429.60 and 45,538.40 is: 68,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,286.40 : 81,429.60 = 45,538.40 : x
  2. Step 2: Convert to fraction form
    54,286.40/81,429.60 = 45,538.40/x
  3. Step 3: Cross multiply
    54,286.40x = 81,429.60 × 45,538.40
  4. Step 4: Simplify right side
    54,286.40x = 3,708,173,696.64
  5. Step 5: Solve for x
    x = 3,708,173,696.64/54,286.40
  6. Step 6: Final answer
    x = 68,307.60

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1.5x scale

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.