Home / 51,316.10-76,979.19-21,324.14

Finding the Fourth Proportional to 51,316.10, 76,979.19 and 21,324.14

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Solution

The fourth proportional to 51,316.10, 76,979.19 and 21,324.14 is: 31,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,316.10 : 76,979.19 = 21,324.14 : x
  2. Step 2: Convert to fraction form
    51,316.10/76,979.19 = 21,324.14/x
  3. Step 3: Cross multiply
    51,316.10x = 76,979.19 × 21,324.14
  4. Step 4: Simplify right side
    51,316.10x = 1,641,515,024.65
  5. Step 5: Solve for x
    x = 1,641,515,024.65/51,316.10
  6. Step 6: Final answer
    x = 31,988.30

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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.