Home / 54,285.83-81,419.17-20,978.52

Finding the Fourth Proportional to 54,285.83, 81,419.17 and 20,978.52

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Solution

The fourth proportional to 54,285.83, 81,419.17 and 20,978.52 is: 31,464.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,285.83 : 81,419.17 = 20,978.52 : x
  2. Step 2: Convert to fraction form
    54,285.83/81,419.17 = 20,978.52/x
  3. Step 3: Cross multiply
    54,285.83x = 81,419.17 × 20,978.52
  4. Step 4: Simplify right side
    54,285.83x = 1,708,053,686.23
  5. Step 5: Solve for x
    x = 1,708,053,686.23/54,285.83
  6. Step 6: Final answer
    x = 31,464.08

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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.