Home / 78,820.13-108,771.38-43,010.03

Finding the Fourth Proportional to 78,820.13, 108,771.38 and 43,010.03

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Solution

The fourth proportional to 78,820.13, 108,771.38 and 43,010.03 is: 59,353.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,820.13 : 108,771.38 = 43,010.03 : x
  2. Step 2: Convert to fraction form
    78,820.13/108,771.38 = 43,010.03/x
  3. Step 3: Cross multiply
    78,820.13x = 108,771.38 × 43,010.03
  4. Step 4: Simplify right side
    78,820.13x = 4,678,260,316.94
  5. Step 5: Solve for x
    x = 4,678,260,316.94/78,820.13
  6. Step 6: Final answer
    x = 59,353.62

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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.