Home / 81,935.29-122,903.33-28,627.05

Finding the Fourth Proportional to 81,935.29, 122,903.33 and 28,627.05

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Solution

The fourth proportional to 81,935.29, 122,903.33 and 28,627.05 is: 42,940.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,935.29 : 122,903.33 = 28,627.05 : x
  2. Step 2: Convert to fraction form
    81,935.29/122,903.33 = 28,627.05/x
  3. Step 3: Cross multiply
    81,935.29x = 122,903.33 × 28,627.05
  4. Step 4: Simplify right side
    81,935.29x = 3,518,359,773.08
  5. Step 5: Solve for x
    x = 3,518,359,773.08/81,935.29
  6. Step 6: Final answer
    x = 42,940.71

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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.