Home / 84,362.72-126,544.07-77,322.95

Finding the Fourth Proportional to 84,362.72, 126,544.07 and 77,322.95

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Solution

The fourth proportional to 84,362.72, 126,544.07 and 77,322.95 is: 115,984.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,362.72 : 126,544.07 = 77,322.95 : x
  2. Step 2: Convert to fraction form
    84,362.72/126,544.07 = 77,322.95/x
  3. Step 3: Cross multiply
    84,362.72x = 126,544.07 × 77,322.95
  4. Step 4: Simplify right side
    84,362.72x = 9,784,760,797.41
  5. Step 5: Solve for x
    x = 9,784,760,797.41/84,362.72
  6. Step 6: Final answer
    x = 115,984.42

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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.