Home / 57,985.56-87,017.28-21,049.56

Finding the Fourth Proportional to 57,985.56, 87,017.28 and 21,049.56

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Solution

The fourth proportional to 57,985.56, 87,017.28 and 21,049.56 is: 31,588.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,985.56 : 87,017.28 = 21,049.56 : x
  2. Step 2: Convert to fraction form
    57,985.56/87,017.28 = 21,049.56/x
  3. Step 3: Cross multiply
    57,985.56x = 87,017.28 × 21,049.56
  4. Step 4: Simplify right side
    57,985.56x = 1,831,675,456.40
  5. Step 5: Solve for x
    x = 1,831,675,456.40/57,985.56
  6. Step 6: Final answer
    x = 31,588.48

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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.