Home / 55,129.36-82,721.40-21,848.68

Finding the Fourth Proportional to 55,129.36, 82,721.40 and 21,848.68

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Solution

The fourth proportional to 55,129.36, 82,721.40 and 21,848.68 is: 32,783.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.36 : 82,721.40 = 21,848.68 : x
  2. Step 2: Convert to fraction form
    55,129.36/82,721.40 = 21,848.68/x
  3. Step 3: Cross multiply
    55,129.36x = 82,721.40 × 21,848.68
  4. Step 4: Simplify right side
    55,129.36x = 1,807,353,288.51
  5. Step 5: Solve for x
    x = 1,807,353,288.51/55,129.36
  6. Step 6: Final answer
    x = 32,783.86

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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.