Home / 85,083.06-127,630.78-28,900.38

Finding the Fourth Proportional to 85,083.06, 127,630.78 and 28,900.38

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Solution

The fourth proportional to 85,083.06, 127,630.78 and 28,900.38 is: 43,352.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,083.06 : 127,630.78 = 28,900.38 : x
  2. Step 2: Convert to fraction form
    85,083.06/127,630.78 = 28,900.38/x
  3. Step 3: Cross multiply
    85,083.06x = 127,630.78 × 28,900.38
  4. Step 4: Simplify right side
    85,083.06x = 3,688,578,041.70
  5. Step 5: Solve for x
    x = 3,688,578,041.70/85,083.06
  6. Step 6: Final answer
    x = 43,352.67

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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.