Home / 79,077.76-109,128.68-43,270.90

Finding the Fourth Proportional to 79,077.76, 109,128.68 and 43,270.90

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Solution

The fourth proportional to 79,077.76, 109,128.68 and 43,270.90 is: 59,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,077.76 : 109,128.68 = 43,270.90 : x
  2. Step 2: Convert to fraction form
    79,077.76/109,128.68 = 43,270.90/x
  3. Step 3: Cross multiply
    79,077.76x = 109,128.68 × 43,270.90
  4. Step 4: Simplify right side
    79,077.76x = 4,722,096,199.41
  5. Step 5: Solve for x
    x = 4,722,096,199.41/79,077.76
  6. Step 6: Final answer
    x = 59,714.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.