Home / 49,420.26-74,129.74-11,980.67

Finding the Fourth Proportional to 49,420.26, 74,129.74 and 11,980.67

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Solution

The fourth proportional to 49,420.26, 74,129.74 and 11,980.67 is: 17,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,420.26 : 74,129.74 = 11,980.67 : x
  2. Step 2: Convert to fraction form
    49,420.26/74,129.74 = 11,980.67/x
  3. Step 3: Cross multiply
    49,420.26x = 74,129.74 × 11,980.67
  4. Step 4: Simplify right side
    49,420.26x = 888,123,952.13
  5. Step 5: Solve for x
    x = 888,123,952.13/49,420.26
  6. Step 6: Final answer
    x = 17,970.85

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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.