Home / 77,303.83-115,954.09-21,143.94

Finding the Fourth Proportional to 77,303.83, 115,954.09 and 21,143.94

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Solution

The fourth proportional to 77,303.83, 115,954.09 and 21,143.94 is: 31,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,303.83 : 115,954.09 = 21,143.94 : x
  2. Step 2: Convert to fraction form
    77,303.83/115,954.09 = 21,143.94/x
  3. Step 3: Cross multiply
    77,303.83x = 115,954.09 × 21,143.94
  4. Step 4: Simplify right side
    77,303.83x = 2,451,726,321.71
  5. Step 5: Solve for x
    x = 2,451,726,321.71/77,303.83
  6. Step 6: Final answer
    x = 31,715.46

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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.