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Finding the Fourth Proportional to 84,858.84, 127,174.86 and 45,330.84

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Solution

The fourth proportional to 84,858.84, 127,174.86 and 45,330.84 is: 67,935.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,858.84 : 127,174.86 = 45,330.84 : x
  2. Step 2: Convert to fraction form
    84,858.84/127,174.86 = 45,330.84/x
  3. Step 3: Cross multiply
    84,858.84x = 127,174.86 × 45,330.84
  4. Step 4: Simplify right side
    84,858.84x = 5,764,943,230.68
  5. Step 5: Solve for x
    x = 5,764,943,230.68/84,858.84
  6. Step 6: Final answer
    x = 67,935.68

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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.