Home / 76,145.04-114,209.31-19,990.79

Finding the Fourth Proportional to 76,145.04, 114,209.31 and 19,990.79

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Solution

The fourth proportional to 76,145.04, 114,209.31 and 19,990.79 is: 29,984.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,145.04 : 114,209.31 = 19,990.79 : x
  2. Step 2: Convert to fraction form
    76,145.04/114,209.31 = 19,990.79/x
  3. Step 3: Cross multiply
    76,145.04x = 114,209.31 × 19,990.79
  4. Step 4: Simplify right side
    76,145.04x = 2,283,133,761.21
  5. Step 5: Solve for x
    x = 2,283,133,761.21/76,145.04
  6. Step 6: Final answer
    x = 29,984.01

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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.