Home / 42,743.20-63,999.60-30,992.80

Finding the Fourth Proportional to 42,743.20, 63,999.60 and 30,992.80

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Solution

The fourth proportional to 42,743.20, 63,999.60 and 30,992.80 is: 46,405.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,743.20 : 63,999.60 = 30,992.80 : x
  2. Step 2: Convert to fraction form
    42,743.20/63,999.60 = 30,992.80/x
  3. Step 3: Cross multiply
    42,743.20x = 63,999.60 × 30,992.80
  4. Step 4: Simplify right side
    42,743.20x = 1,983,526,802.88
  5. Step 5: Solve for x
    x = 1,983,526,802.88/42,743.20
  6. Step 6: Final answer
    x = 46,405.67

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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.