Home / 76,705.62-115,057.51-19,779.22

Finding the Fourth Proportional to 76,705.62, 115,057.51 and 19,779.22

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Solution

The fourth proportional to 76,705.62, 115,057.51 and 19,779.22 is: 29,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,705.62 : 115,057.51 = 19,779.22 : x
  2. Step 2: Convert to fraction form
    76,705.62/115,057.51 = 19,779.22/x
  3. Step 3: Cross multiply
    76,705.62x = 115,057.51 × 19,779.22
  4. Step 4: Simplify right side
    76,705.62x = 2,275,748,008.57
  5. Step 5: Solve for x
    x = 2,275,748,008.57/76,705.62
  6. Step 6: Final answer
    x = 29,668.60

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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.