Home / 85,108.39-127,635.14-28,171.67

Finding the Fourth Proportional to 85,108.39, 127,635.14 and 28,171.67

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Solution

The fourth proportional to 85,108.39, 127,635.14 and 28,171.67 is: 42,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,108.39 : 127,635.14 = 28,171.67 : x
  2. Step 2: Convert to fraction form
    85,108.39/127,635.14 = 28,171.67/x
  3. Step 3: Cross multiply
    85,108.39x = 127,635.14 × 28,171.67
  4. Step 4: Simplify right side
    85,108.39x = 3,595,694,476.74
  5. Step 5: Solve for x
    x = 3,595,694,476.74/85,108.39
  6. Step 6: Final answer
    x = 42,248.42

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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.