Home / 78,821.76-108,736.44-53,337.06

Finding the Fourth Proportional to 78,821.76, 108,736.44 and 53,337.06

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Solution

The fourth proportional to 78,821.76, 108,736.44 and 53,337.06 is: 73,579.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821.76 : 108,736.44 = 53,337.06 : x
  2. Step 2: Convert to fraction form
    78,821.76/108,736.44 = 53,337.06/x
  3. Step 3: Cross multiply
    78,821.76x = 108,736.44 × 53,337.06
  4. Step 4: Simplify right side
    78,821.76x = 5,799,682,024.47
  5. Step 5: Solve for x
    x = 5,799,682,024.47/78,821.76
  6. Step 6: Final answer
    x = 73,579.71

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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.