Home / 91,786.49-126,429.36-64,882.75

Finding the Fourth Proportional to 91,786.49, 126,429.36 and 64,882.75

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Solution

The fourth proportional to 91,786.49, 126,429.36 and 64,882.75 is: 89,371.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,786.49 : 126,429.36 = 64,882.75 : x
  2. Step 2: Convert to fraction form
    91,786.49/126,429.36 = 64,882.75/x
  3. Step 3: Cross multiply
    91,786.49x = 126,429.36 × 64,882.75
  4. Step 4: Simplify right side
    91,786.49x = 8,203,084,557.54
  5. Step 5: Solve for x
    x = 8,203,084,557.54/91,786.49
  6. Step 6: Final answer
    x = 89,371.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.