Home / 77,829.36-107,408.52-47,605.20

Finding the Fourth Proportional to 77,829.36, 107,408.52 and 47,605.20

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Solution

The fourth proportional to 77,829.36, 107,408.52 and 47,605.20 is: 65,697.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,829.36 : 107,408.52 = 47,605.20 : x
  2. Step 2: Convert to fraction form
    77,829.36/107,408.52 = 47,605.20/x
  3. Step 3: Cross multiply
    77,829.36x = 107,408.52 × 47,605.20
  4. Step 4: Simplify right side
    77,829.36x = 5,113,204,076.30
  5. Step 5: Solve for x
    x = 5,113,204,076.30/77,829.36
  6. Step 6: Final answer
    x = 65,697.62

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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.