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Finding the Fourth Proportional to 54,815.40, 82,225.80 and 28,571.40

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Solution

The fourth proportional to 54,815.40, 82,225.80 and 28,571.40 is: 42,858.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,815.40 : 82,225.80 = 28,571.40 : x
  2. Step 2: Convert to fraction form
    54,815.40/82,225.80 = 28,571.40/x
  3. Step 3: Cross multiply
    54,815.40x = 82,225.80 × 28,571.40
  4. Step 4: Simplify right side
    54,815.40x = 2,349,306,222.12
  5. Step 5: Solve for x
    x = 2,349,306,222.12/54,815.40
  6. Step 6: Final answer
    x = 42,858.51

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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.