Home / 55,980.46-83,967.81-20,917.36

Finding the Fourth Proportional to 55,980.46, 83,967.81 and 20,917.36

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Solution

The fourth proportional to 55,980.46, 83,967.81 and 20,917.36 is: 31,374.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,980.46 : 83,967.81 = 20,917.36 : x
  2. Step 2: Convert to fraction form
    55,980.46/83,967.81 = 20,917.36/x
  3. Step 3: Cross multiply
    55,980.46x = 83,967.81 × 20,917.36
  4. Step 4: Simplify right side
    55,980.46x = 1,756,384,910.18
  5. Step 5: Solve for x
    x = 1,756,384,910.18/55,980.46
  6. Step 6: Final answer
    x = 31,374.96

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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.