Home / 85,688.34-128,519.82-33,091.26

Finding the Fourth Proportional to 85,688.34, 128,519.82 and 33,091.26

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Solution

The fourth proportional to 85,688.34, 128,519.82 and 33,091.26 is: 49,631.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,688.34 : 128,519.82 = 33,091.26 : x
  2. Step 2: Convert to fraction form
    85,688.34/128,519.82 = 33,091.26/x
  3. Step 3: Cross multiply
    85,688.34x = 128,519.82 × 33,091.26
  4. Step 4: Simplify right side
    85,688.34x = 4,252,882,778.77
  5. Step 5: Solve for x
    x = 4,252,882,778.77/85,688.34
  6. Step 6: Final answer
    x = 49,631.99

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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.