Home / 77,022.73-115,534.28-20,863.18

Finding the Fourth Proportional to 77,022.73, 115,534.28 and 20,863.18

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Solution

The fourth proportional to 77,022.73, 115,534.28 and 20,863.18 is: 31,294.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,022.73 : 115,534.28 = 20,863.18 : x
  2. Step 2: Convert to fraction form
    77,022.73/115,534.28 = 20,863.18/x
  3. Step 3: Cross multiply
    77,022.73x = 115,534.28 × 20,863.18
  4. Step 4: Simplify right side
    77,022.73x = 2,410,412,479.81
  5. Step 5: Solve for x
    x = 2,410,412,479.81/77,022.73
  6. Step 6: Final answer
    x = 31,294.82

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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.