Home / 54,689.64-81,985.24-19,621.09

Finding the Fourth Proportional to 54,689.64, 81,985.24 and 19,621.09

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Solution

The fourth proportional to 54,689.64, 81,985.24 and 19,621.09 is: 29,413.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,689.64 : 81,985.24 = 19,621.09 : x
  2. Step 2: Convert to fraction form
    54,689.64/81,985.24 = 19,621.09/x
  3. Step 3: Cross multiply
    54,689.64x = 81,985.24 × 19,621.09
  4. Step 4: Simplify right side
    54,689.64x = 1,608,639,772.71
  5. Step 5: Solve for x
    x = 1,608,639,772.71/54,689.64
  6. Step 6: Final answer
    x = 29,413.98

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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.