Home / 77,787.99-116,012.07-76,388.31

Finding the Fourth Proportional to 77,787.99, 116,012.07 and 76,388.31

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Solution

The fourth proportional to 77,787.99, 116,012.07 and 76,388.31 is: 113,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,787.99 : 116,012.07 = 76,388.31 : x
  2. Step 2: Convert to fraction form
    77,787.99/116,012.07 = 76,388.31/x
  3. Step 3: Cross multiply
    77,787.99x = 116,012.07 × 76,388.31
  4. Step 4: Simplify right side
    77,787.99x = 8,861,965,966.90
  5. Step 5: Solve for x
    x = 8,861,965,966.90/77,787.99
  6. Step 6: Final answer
    x = 113,924.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.