Home / 51,131.16-76,666.44-19,929.96

Finding the Fourth Proportional to 51,131.16, 76,666.44 and 19,929.96

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Solution

The fourth proportional to 51,131.16, 76,666.44 and 19,929.96 is: 29,883.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,131.16 : 76,666.44 = 19,929.96 : x
  2. Step 2: Convert to fraction form
    51,131.16/76,666.44 = 19,929.96/x
  3. Step 3: Cross multiply
    51,131.16x = 76,666.44 × 19,929.96
  4. Step 4: Simplify right side
    51,131.16x = 1,527,959,082.54
  5. Step 5: Solve for x
    x = 1,527,959,082.54/51,131.16
  6. Step 6: Final answer
    x = 29,883.13

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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.