Home / 54,345.40-81,518.10-19,288.60

Finding the Fourth Proportional to 54,345.40, 81,518.10 and 19,288.60

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Solution

The fourth proportional to 54,345.40, 81,518.10 and 19,288.60 is: 28,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,345.40 : 81,518.10 = 19,288.60 : x
  2. Step 2: Convert to fraction form
    54,345.40/81,518.10 = 19,288.60/x
  3. Step 3: Cross multiply
    54,345.40x = 81,518.10 × 19,288.60
  4. Step 4: Simplify right side
    54,345.40x = 1,572,370,023.66
  5. Step 5: Solve for x
    x = 1,572,370,023.66/54,345.40
  6. Step 6: Final answer
    x = 28,932.90

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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.