Home / 55,128.85-82,720.64-21,848.18

Finding the Fourth Proportional to 55,128.85, 82,720.64 and 21,848.18

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Solution

The fourth proportional to 55,128.85, 82,720.64 and 21,848.18 is: 32,783.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.85 : 82,720.64 = 21,848.18 : x
  2. Step 2: Convert to fraction form
    55,128.85/82,720.64 = 21,848.18/x
  3. Step 3: Cross multiply
    55,128.85x = 82,720.64 × 21,848.18
  4. Step 4: Simplify right side
    55,128.85x = 1,807,295,538.76
  5. Step 5: Solve for x
    x = 1,807,295,538.76/55,128.85
  6. Step 6: Final answer
    x = 32,783.12

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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.