Home / 53,802.20-80,768.10-30,128.60

Finding the Fourth Proportional to 53,802.20, 80,768.10 and 30,128.60

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Solution

The fourth proportional to 53,802.20, 80,768.10 and 30,128.60 is: 45,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,802.20 : 80,768.10 = 30,128.60 : x
  2. Step 2: Convert to fraction form
    53,802.20/80,768.10 = 30,128.60/x
  3. Step 3: Cross multiply
    53,802.20x = 80,768.10 × 30,128.60
  4. Step 4: Simplify right side
    53,802.20x = 2,433,429,777.66
  5. Step 5: Solve for x
    x = 2,433,429,777.66/53,802.20
  6. Step 6: Final answer
    x = 45,229.19

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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.