Home / 84,986.72-127,478.96-38,206.56

Finding the Fourth Proportional to 84,986.72, 127,478.96 and 38,206.56

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Solution

The fourth proportional to 84,986.72, 127,478.96 and 38,206.56 is: 57,309.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,986.72 : 127,478.96 = 38,206.56 : x
  2. Step 2: Convert to fraction form
    84,986.72/127,478.96 = 38,206.56/x
  3. Step 3: Cross multiply
    84,986.72x = 127,478.96 × 38,206.56
  4. Step 4: Simplify right side
    84,986.72x = 4,870,532,533.98
  5. Step 5: Solve for x
    x = 4,870,532,533.98/84,986.72
  6. Step 6: Final answer
    x = 57,309.34

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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.