Home / 51,123.20-76,688.40-28,947.20

Finding the Fourth Proportional to 51,123.20, 76,688.40 and 28,947.20

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Solution

The fourth proportional to 51,123.20, 76,688.40 and 28,947.20 is: 43,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,123.20 : 76,688.40 = 28,947.20 : x
  2. Step 2: Convert to fraction form
    51,123.20/76,688.40 = 28,947.20/x
  3. Step 3: Cross multiply
    51,123.20x = 76,688.40 × 28,947.20
  4. Step 4: Simplify right side
    51,123.20x = 2,219,914,452.48
  5. Step 5: Solve for x
    x = 2,219,914,452.48/51,123.20
  6. Step 6: Final answer
    x = 43,422.84

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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.