Home / 85,171.50-127,660.35-51,818.03

Finding the Fourth Proportional to 85,171.50, 127,660.35 and 51,818.03

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Solution

The fourth proportional to 85,171.50, 127,660.35 and 51,818.03 is: 77,668.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,171.50 : 127,660.35 = 51,818.03 : x
  2. Step 2: Convert to fraction form
    85,171.50/127,660.35 = 51,818.03/x
  3. Step 3: Cross multiply
    85,171.50x = 127,660.35 × 51,818.03
  4. Step 4: Simplify right side
    85,171.50x = 6,615,107,880.85
  5. Step 5: Solve for x
    x = 6,615,107,880.85/85,171.50
  6. Step 6: Final answer
    x = 77,668.09

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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.