Home / 57,787.83-86,706.80-20,374.64

Finding the Fourth Proportional to 57,787.83, 86,706.80 and 20,374.64

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Solution

The fourth proportional to 57,787.83, 86,706.80 and 20,374.64 is: 30,570.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,787.83 : 86,706.80 = 20,374.64 : x
  2. Step 2: Convert to fraction form
    57,787.83/86,706.80 = 20,374.64/x
  3. Step 3: Cross multiply
    57,787.83x = 86,706.80 × 20,374.64
  4. Step 4: Simplify right side
    57,787.83x = 1,766,619,816.31
  5. Step 5: Solve for x
    x = 1,766,619,816.31/57,787.83
  6. Step 6: Final answer
    x = 30,570.79

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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.