Home / 81,656.84-122,370.39-64,942.69

Finding the Fourth Proportional to 81,656.84, 122,370.39 and 64,942.69

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Solution

The fourth proportional to 81,656.84, 122,370.39 and 64,942.69 is: 97,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656.84 : 122,370.39 = 64,942.69 : x
  2. Step 2: Convert to fraction form
    81,656.84/122,370.39 = 64,942.69/x
  3. Step 3: Cross multiply
    81,656.84x = 122,370.39 × 64,942.69
  4. Step 4: Simplify right side
    81,656.84x = 7,947,062,302.95
  5. Step 5: Solve for x
    x = 7,947,062,302.95/81,656.84
  6. Step 6: Final answer
    x = 97,322.68

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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.