Home / 81,336.08-121,985.76-41,314.64

Finding the Fourth Proportional to 81,336.08, 121,985.76 and 41,314.64

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Solution

The fourth proportional to 81,336.08, 121,985.76 and 41,314.64 is: 61,962.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,336.08 : 121,985.76 = 41,314.64 : x
  2. Step 2: Convert to fraction form
    81,336.08/121,985.76 = 41,314.64/x
  3. Step 3: Cross multiply
    81,336.08x = 121,985.76 × 41,314.64
  4. Step 4: Simplify right side
    81,336.08x = 5,039,797,759.53
  5. Step 5: Solve for x
    x = 5,039,797,759.53/81,336.08
  6. Step 6: Final answer
    x = 61,962.63

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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.