Home / 77,021.25-115,343.18-63,612.20

Finding the Fourth Proportional to 77,021.25, 115,343.18 and 63,612.20

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Solution

The fourth proportional to 77,021.25, 115,343.18 and 63,612.20 is: 95,262.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,021.25 : 115,343.18 = 63,612.20 : x
  2. Step 2: Convert to fraction form
    77,021.25/115,343.18 = 63,612.20/x
  3. Step 3: Cross multiply
    77,021.25x = 115,343.18 × 63,612.20
  4. Step 4: Simplify right side
    77,021.25x = 7,337,232,540.02
  5. Step 5: Solve for x
    x = 7,337,232,540.02/77,021.25
  6. Step 6: Final answer
    x = 95,262.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.