Home / 56,731.05-85,104.81-21,189.33

Finding the Fourth Proportional to 56,731.05, 85,104.81 and 21,189.33

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Solution

The fourth proportional to 56,731.05, 85,104.81 and 21,189.33 is: 31,787.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.05 : 85,104.81 = 21,189.33 : x
  2. Step 2: Convert to fraction form
    56,731.05/85,104.81 = 21,189.33/x
  3. Step 3: Cross multiply
    56,731.05x = 85,104.81 × 21,189.33
  4. Step 4: Simplify right side
    56,731.05x = 1,803,313,903.68
  5. Step 5: Solve for x
    x = 1,803,313,903.68/56,731.05
  6. Step 6: Final answer
    x = 31,787.07

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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.