Home / 56,428.28-84,615.89-20,865.03

Finding the Fourth Proportional to 56,428.28, 84,615.89 and 20,865.03

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Solution

The fourth proportional to 56,428.28, 84,615.89 and 20,865.03 is: 31,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,428.28 : 84,615.89 = 20,865.03 : x
  2. Step 2: Convert to fraction form
    56,428.28/84,615.89 = 20,865.03/x
  3. Step 3: Cross multiply
    56,428.28x = 84,615.89 × 20,865.03
  4. Step 4: Simplify right side
    56,428.28x = 1,765,513,083.33
  5. Step 5: Solve for x
    x = 1,765,513,083.33/56,428.28
  6. Step 6: Final answer
    x = 31,287.74

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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.