Home / 85,671.37-128,519.34-26,511.67

Finding the Fourth Proportional to 85,671.37, 128,519.34 and 26,511.67

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Solution

The fourth proportional to 85,671.37, 128,519.34 and 26,511.67 is: 39,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,671.37 : 128,519.34 = 26,511.67 : x
  2. Step 2: Convert to fraction form
    85,671.37/128,519.34 = 26,511.67/x
  3. Step 3: Cross multiply
    85,671.37x = 128,519.34 × 26,511.67
  4. Step 4: Simplify right side
    85,671.37x = 3,407,262,330.70
  5. Step 5: Solve for x
    x = 3,407,262,330.70/85,671.37
  6. Step 6: Final answer
    x = 39,771.31

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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.