Home / 81,616.33-122,445.08-39,516.58

Finding the Fourth Proportional to 81,616.33, 122,445.08 and 39,516.58

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Solution

The fourth proportional to 81,616.33, 122,445.08 and 39,516.58 is: 59,284.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,616.33 : 122,445.08 = 39,516.58 : x
  2. Step 2: Convert to fraction form
    81,616.33/122,445.08 = 39,516.58/x
  3. Step 3: Cross multiply
    81,616.33x = 122,445.08 × 39,516.58
  4. Step 4: Simplify right side
    81,616.33x = 4,838,610,799.43
  5. Step 5: Solve for x
    x = 4,838,610,799.43/81,616.33
  6. Step 6: Final answer
    x = 59,284.84

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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.