Home / 49,123.20-73,684.80-12,187.20

Finding the Fourth Proportional to 49,123.20, 73,684.80 and 12,187.20

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Solution

The fourth proportional to 49,123.20, 73,684.80 and 12,187.20 is: 18,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,123.20 : 73,684.80 = 12,187.20 : x
  2. Step 2: Convert to fraction form
    49,123.20/73,684.80 = 12,187.20/x
  3. Step 3: Cross multiply
    49,123.20x = 73,684.80 × 12,187.20
  4. Step 4: Simplify right side
    49,123.20x = 898,011,394.56
  5. Step 5: Solve for x
    x = 898,011,394.56/49,123.20
  6. Step 6: Final answer
    x = 18,280.80

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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.