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Finding the Fourth Proportional to 79,785, 110,102.83 and 43,486.40

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Solution

The fourth proportional to 79,785, 110,102.83 and 43,486.40 is: 60,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,785 : 110,102.83 = 43,486.40 : x
  2. Step 2: Convert to fraction form
    79,785/110,102.83 = 43,486.40/x
  3. Step 3: Cross multiply
    79,785x = 110,102.83 × 43,486.40
  4. Step 4: Simplify right side
    79,785x = 4,787,975,873.05
  5. Step 5: Solve for x
    x = 4,787,975,873.05/79,785
  6. Step 6: Final answer
    x = 60,010.98

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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.