Home / 77,023.73-115,535.78-20,864.18

Finding the Fourth Proportional to 77,023.73, 115,535.78 and 20,864.18

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Solution

The fourth proportional to 77,023.73, 115,535.78 and 20,864.18 is: 31,296.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,023.73 : 115,535.78 = 20,864.18 : x
  2. Step 2: Convert to fraction form
    77,023.73/115,535.78 = 20,864.18/x
  3. Step 3: Cross multiply
    77,023.73x = 115,535.78 × 20,864.18
  4. Step 4: Simplify right side
    77,023.73x = 2,410,559,310.36
  5. Step 5: Solve for x
    x = 2,410,559,310.36/77,023.73
  6. Step 6: Final answer
    x = 31,296.32

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1.5x scale

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.