Home / 76,786.02-115,179-30,006.12

Finding the Fourth Proportional to 76,786.02, 115,179 and 30,006.12

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Solution

The fourth proportional to 76,786.02, 115,179 and 30,006.12 is: 45,009.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,786.02 : 115,179 = 30,006.12 : x
  2. Step 2: Convert to fraction form
    76,786.02/115,179 = 30,006.12/x
  3. Step 3: Cross multiply
    76,786.02x = 115,179 × 30,006.12
  4. Step 4: Simplify right side
    76,786.02x = 3,456,074,895.48
  5. Step 5: Solve for x
    x = 3,456,074,895.48/76,786.02
  6. Step 6: Final answer
    x = 45,009.17

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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.