Home / 55,081.60-82,623.12-21,787.36

Finding the Fourth Proportional to 55,081.60, 82,623.12 and 21,787.36

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Solution

The fourth proportional to 55,081.60, 82,623.12 and 21,787.36 is: 32,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,081.60 : 82,623.12 = 21,787.36 : x
  2. Step 2: Convert to fraction form
    55,081.60/82,623.12 = 21,787.36/x
  3. Step 3: Cross multiply
    55,081.60x = 82,623.12 × 21,787.36
  4. Step 4: Simplify right side
    55,081.60x = 1,800,139,659.76
  5. Step 5: Solve for x
    x = 1,800,139,659.76/55,081.60
  6. Step 6: Final answer
    x = 32,681.32

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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.