Home / 53,603.28-80,381.52-21,991.68

Finding the Fourth Proportional to 53,603.28, 80,381.52 and 21,991.68

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Solution

The fourth proportional to 53,603.28, 80,381.52 and 21,991.68 is: 32,977.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,603.28 : 80,381.52 = 21,991.68 : x
  2. Step 2: Convert to fraction form
    53,603.28/80,381.52 = 21,991.68/x
  3. Step 3: Cross multiply
    53,603.28x = 80,381.52 × 21,991.68
  4. Step 4: Simplify right side
    53,603.28x = 1,767,724,665.75
  5. Step 5: Solve for x
    x = 1,767,724,665.75/53,603.28
  6. Step 6: Final answer
    x = 32,977.92

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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.