Home / 81,977.05-122,965.51-22,812.76

Finding the Fourth Proportional to 81,977.05, 122,965.51 and 22,812.76

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Solution

The fourth proportional to 81,977.05, 122,965.51 and 22,812.76 is: 34,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,977.05 : 122,965.51 = 22,812.76 : x
  2. Step 2: Convert to fraction form
    81,977.05/122,965.51 = 22,812.76/x
  3. Step 3: Cross multiply
    81,977.05x = 122,965.51 × 22,812.76
  4. Step 4: Simplify right side
    81,977.05x = 2,805,182,667.91
  5. Step 5: Solve for x
    x = 2,805,182,667.91/81,977.05
  6. Step 6: Final answer
    x = 34,219.12

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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.