Home / 85,162.76-117,518.96-51,172.68

Finding the Fourth Proportional to 85,162.76, 117,518.96 and 51,172.68

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Solution

The fourth proportional to 85,162.76, 117,518.96 and 51,172.68 is: 70,614.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,162.76 : 117,518.96 = 51,172.68 : x
  2. Step 2: Convert to fraction form
    85,162.76/117,518.96 = 51,172.68/x
  3. Step 3: Cross multiply
    85,162.76x = 117,518.96 × 51,172.68
  4. Step 4: Simplify right side
    85,162.76x = 6,013,760,134.01
  5. Step 5: Solve for x
    x = 6,013,760,134.01/85,162.76
  6. Step 6: Final answer
    x = 70,614.90

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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.