Home / 51,280.50-76,957.20-20,115.75

Finding the Fourth Proportional to 51,280.50, 76,957.20 and 20,115.75

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Solution

The fourth proportional to 51,280.50, 76,957.20 and 20,115.75 is: 30,187.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,280.50 : 76,957.20 = 20,115.75 : x
  2. Step 2: Convert to fraction form
    51,280.50/76,957.20 = 20,115.75/x
  3. Step 3: Cross multiply
    51,280.50x = 76,957.20 × 20,115.75
  4. Step 4: Simplify right side
    51,280.50x = 1,548,051,795.90
  5. Step 5: Solve for x
    x = 1,548,051,795.90/51,280.50
  6. Step 6: Final answer
    x = 30,187.92

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1.5x scale

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.