Home / 76,949.10-115,215.12-39,935.34

Finding the Fourth Proportional to 76,949.10, 115,215.12 and 39,935.34

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Solution

The fourth proportional to 76,949.10, 115,215.12 and 39,935.34 is: 59,794.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,949.10 : 115,215.12 = 39,935.34 : x
  2. Step 2: Convert to fraction form
    76,949.10/115,215.12 = 39,935.34/x
  3. Step 3: Cross multiply
    76,949.10x = 115,215.12 × 39,935.34
  4. Step 4: Simplify right side
    76,949.10x = 4,601,154,990.34
  5. Step 5: Solve for x
    x = 4,601,154,990.34/76,949.10
  6. Step 6: Final answer
    x = 59,794.79

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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.