Home / 51,905.21-71,629.18-28,031.88

Finding the Fourth Proportional to 51,905.21, 71,629.18 and 28,031.88

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Solution

The fourth proportional to 51,905.21, 71,629.18 and 28,031.88 is: 38,683.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,905.21 : 71,629.18 = 28,031.88 : x
  2. Step 2: Convert to fraction form
    51,905.21/71,629.18 = 28,031.88/x
  3. Step 3: Cross multiply
    51,905.21x = 71,629.18 × 28,031.88
  4. Step 4: Simplify right side
    51,905.21x = 2,007,900,508.18
  5. Step 5: Solve for x
    x = 2,007,900,508.18/51,905.21
  6. Step 6: Final answer
    x = 38,683.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.