Home / 54,329.13-81,477.90-21,041.78

Finding the Fourth Proportional to 54,329.13, 81,477.90 and 21,041.78

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Solution

The fourth proportional to 54,329.13, 81,477.90 and 21,041.78 is: 31,556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,329.13 : 81,477.90 = 21,041.78 : x
  2. Step 2: Convert to fraction form
    54,329.13/81,477.90 = 21,041.78/x
  3. Step 3: Cross multiply
    54,329.13x = 81,477.90 × 21,041.78
  4. Step 4: Simplify right side
    54,329.13x = 1,714,439,639.27
  5. Step 5: Solve for x
    x = 1,714,439,639.27/54,329.13
  6. Step 6: Final answer
    x = 31,556.55

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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.