Home / 51,428.30-70,977.62-28,768.55

Finding the Fourth Proportional to 51,428.30, 70,977.62 and 28,768.55

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Solution

The fourth proportional to 51,428.30, 70,977.62 and 28,768.55 is: 39,704.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,428.30 : 70,977.62 = 28,768.55 : x
  2. Step 2: Convert to fraction form
    51,428.30/70,977.62 = 28,768.55/x
  3. Step 3: Cross multiply
    51,428.30x = 70,977.62 × 28,768.55
  4. Step 4: Simplify right side
    51,428.30x = 2,041,923,459.22
  5. Step 5: Solve for x
    x = 2,041,923,459.22/51,428.30
  6. Step 6: Final answer
    x = 39,704.27

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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.