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Finding the Fourth Proportional to 81,292.87, 121,950.78 and 25,137.73

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Solution

The fourth proportional to 81,292.87, 121,950.78 and 25,137.73 is: 37,710.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,292.87 : 121,950.78 = 25,137.73 : x
  2. Step 2: Convert to fraction form
    81,292.87/121,950.78 = 25,137.73/x
  3. Step 3: Cross multiply
    81,292.87x = 121,950.78 × 25,137.73
  4. Step 4: Simplify right side
    81,292.87x = 3,065,565,780.93
  5. Step 5: Solve for x
    x = 3,065,565,780.93/81,292.87
  6. Step 6: Final answer
    x = 37,710.14

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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.