Home / 81,780.53-122,673.51-22,616.69

Finding the Fourth Proportional to 81,780.53, 122,673.51 and 22,616.69

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Solution

The fourth proportional to 81,780.53, 122,673.51 and 22,616.69 is: 33,925.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,780.53 : 122,673.51 = 22,616.69 : x
  2. Step 2: Convert to fraction form
    81,780.53/122,673.51 = 22,616.69/x
  3. Step 3: Cross multiply
    81,780.53x = 122,673.51 × 22,616.69
  4. Step 4: Simplify right side
    81,780.53x = 2,774,468,133.51
  5. Step 5: Solve for x
    x = 2,774,468,133.51/81,780.53
  6. Step 6: Final answer
    x = 33,925.78

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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.