Home / 51,432.31-70,983.15-28,772.56

Finding the Fourth Proportional to 51,432.31, 70,983.15 and 28,772.56

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Solution

The fourth proportional to 51,432.31, 70,983.15 and 28,772.56 is: 39,709.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,432.31 : 70,983.15 = 28,772.56 : x
  2. Step 2: Convert to fraction form
    51,432.31/70,983.15 = 28,772.56/x
  3. Step 3: Cross multiply
    51,432.31x = 70,983.15 × 28,772.56
  4. Step 4: Simplify right side
    51,432.31x = 2,042,366,942.36
  5. Step 5: Solve for x
    x = 2,042,366,942.36/51,432.31
  6. Step 6: Final answer
    x = 39,709.80

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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.