Home / 76,922.92-115,384.38-21,518.92

Finding the Fourth Proportional to 76,922.92, 115,384.38 and 21,518.92

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Solution

The fourth proportional to 76,922.92, 115,384.38 and 21,518.92 is: 32,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,922.92 : 115,384.38 = 21,518.92 : x
  2. Step 2: Convert to fraction form
    76,922.92/115,384.38 = 21,518.92/x
  3. Step 3: Cross multiply
    76,922.92x = 115,384.38 × 21,518.92
  4. Step 4: Simplify right side
    76,922.92x = 2,482,947,242.47
  5. Step 5: Solve for x
    x = 2,482,947,242.47/76,922.92
  6. Step 6: Final answer
    x = 32,278.38

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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.