Home / 81,050.07-121,490.89-33,690.89

Finding the Fourth Proportional to 81,050.07, 121,490.89 and 33,690.89

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Solution

The fourth proportional to 81,050.07, 121,490.89 and 33,690.89 is: 50,501.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,050.07 : 121,490.89 = 33,690.89 : x
  2. Step 2: Convert to fraction form
    81,050.07/121,490.89 = 33,690.89/x
  3. Step 3: Cross multiply
    81,050.07x = 121,490.89 × 33,690.89
  4. Step 4: Simplify right side
    81,050.07x = 4,093,135,747.11
  5. Step 5: Solve for x
    x = 4,093,135,747.11/81,050.07
  6. Step 6: Final answer
    x = 50,501.32

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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.