Home / 85,405.16-117,763.26-55,150.76

Finding the Fourth Proportional to 85,405.16, 117,763.26 and 55,150.76

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Solution

The fourth proportional to 85,405.16, 117,763.26 and 55,150.76 is: 76,046.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,405.16 : 117,763.26 = 55,150.76 : x
  2. Step 2: Convert to fraction form
    85,405.16/117,763.26 = 55,150.76/x
  3. Step 3: Cross multiply
    85,405.16x = 117,763.26 × 55,150.76
  4. Step 4: Simplify right side
    85,405.16x = 6,494,733,289.08
  5. Step 5: Solve for x
    x = 6,494,733,289.08/85,405.16
  6. Step 6: Final answer
    x = 76,046.15

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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.