Home / 52,481.99-78,719.75-21,316.43

Finding the Fourth Proportional to 52,481.99, 78,719.75 and 21,316.43

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Solution

The fourth proportional to 52,481.99, 78,719.75 and 21,316.43 is: 31,973.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,481.99 : 78,719.75 = 21,316.43 : x
  2. Step 2: Convert to fraction form
    52,481.99/78,719.75 = 21,316.43/x
  3. Step 3: Cross multiply
    52,481.99x = 78,719.75 × 21,316.43
  4. Step 4: Simplify right side
    52,481.99x = 1,678,024,210.65
  5. Step 5: Solve for x
    x = 1,678,024,210.65/52,481.99
  6. Step 6: Final answer
    x = 31,973.33

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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.