Home / 55,139.40-82,730.70-21,853.80

Finding the Fourth Proportional to 55,139.40, 82,730.70 and 21,853.80

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Solution

The fourth proportional to 55,139.40, 82,730.70 and 21,853.80 is: 32,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,139.40 : 82,730.70 = 21,853.80 : x
  2. Step 2: Convert to fraction form
    55,139.40/82,730.70 = 21,853.80/x
  3. Step 3: Cross multiply
    55,139.40x = 82,730.70 × 21,853.80
  4. Step 4: Simplify right side
    55,139.40x = 1,807,980,171.66
  5. Step 5: Solve for x
    x = 1,807,980,171.66/55,139.40
  6. Step 6: Final answer
    x = 32,789.26

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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.