Home / 77,065.02-115,605.23-20,906.06

Finding the Fourth Proportional to 77,065.02, 115,605.23 and 20,906.06

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Solution

The fourth proportional to 77,065.02, 115,605.23 and 20,906.06 is: 31,361.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,065.02 : 115,605.23 = 20,906.06 : x
  2. Step 2: Convert to fraction form
    77,065.02/115,605.23 = 20,906.06/x
  3. Step 3: Cross multiply
    77,065.02x = 115,605.23 × 20,906.06
  4. Step 4: Simplify right side
    77,065.02x = 2,416,849,192.14
  5. Step 5: Solve for x
    x = 2,416,849,192.14/77,065.02
  6. Step 6: Final answer
    x = 31,361.17

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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.