Home / 80,761.84-121,134.24-21,603.48

Finding the Fourth Proportional to 80,761.84, 121,134.24 and 21,603.48

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Solution

The fourth proportional to 80,761.84, 121,134.24 and 21,603.48 is: 32,402.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,761.84 : 121,134.24 = 21,603.48 : x
  2. Step 2: Convert to fraction form
    80,761.84/121,134.24 = 21,603.48/x
  3. Step 3: Cross multiply
    80,761.84x = 121,134.24 × 21,603.48
  4. Step 4: Simplify right side
    80,761.84x = 2,616,921,131.16
  5. Step 5: Solve for x
    x = 2,616,921,131.16/80,761.84
  6. Step 6: Final answer
    x = 32,402.94

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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.