Home / 81,079.39-121,619.08-41,092.15

Finding the Fourth Proportional to 81,079.39, 121,619.08 and 41,092.15

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Solution

The fourth proportional to 81,079.39, 121,619.08 and 41,092.15 is: 61,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,079.39 : 121,619.08 = 41,092.15 : x
  2. Step 2: Convert to fraction form
    81,079.39/121,619.08 = 41,092.15/x
  3. Step 3: Cross multiply
    81,079.39x = 121,619.08 × 41,092.15
  4. Step 4: Simplify right side
    81,079.39x = 4,997,588,870.13
  5. Step 5: Solve for x
    x = 4,997,588,870.13/81,079.39
  6. Step 6: Final answer
    x = 61,638.21

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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.