Home / 77,977.37-116,945.28-21,813.99

Finding the Fourth Proportional to 77,977.37, 116,945.28 and 21,813.99

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Solution

The fourth proportional to 77,977.37, 116,945.28 and 21,813.99 is: 32,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,977.37 : 116,945.28 = 21,813.99 : x
  2. Step 2: Convert to fraction form
    77,977.37/116,945.28 = 21,813.99/x
  3. Step 3: Cross multiply
    77,977.37x = 116,945.28 × 21,813.99
  4. Step 4: Simplify right side
    77,977.37x = 2,551,043,168.47
  5. Step 5: Solve for x
    x = 2,551,043,168.47/77,977.37
  6. Step 6: Final answer
    x = 32,715.18

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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.