Home / 81,921.87-122,685.98-46,754.91

Finding the Fourth Proportional to 81,921.87, 122,685.98 and 46,754.91

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Solution

The fourth proportional to 81,921.87, 122,685.98 and 46,754.91 is: 70,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.87 : 122,685.98 = 46,754.91 : x
  2. Step 2: Convert to fraction form
    81,921.87/122,685.98 = 46,754.91/x
  3. Step 3: Cross multiply
    81,921.87x = 122,685.98 × 46,754.91
  4. Step 4: Simplify right side
    81,921.87x = 5,736,171,719.39
  5. Step 5: Solve for x
    x = 5,736,171,719.39/81,921.87
  6. Step 6: Final answer
    x = 70,020.03

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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.