Home / 84,240.51-126,415.09-54,251.61

Finding the Fourth Proportional to 84,240.51, 126,415.09 and 54,251.61

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Solution

The fourth proportional to 84,240.51, 126,415.09 and 54,251.61 is: 81,412.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,240.51 : 126,415.09 = 54,251.61 : x
  2. Step 2: Convert to fraction form
    84,240.51/126,415.09 = 54,251.61/x
  3. Step 3: Cross multiply
    84,240.51x = 126,415.09 × 54,251.61
  4. Step 4: Simplify right side
    84,240.51x = 6,858,222,364.16
  5. Step 5: Solve for x
    x = 6,858,222,364.16/84,240.51
  6. Step 6: Final answer
    x = 81,412.41

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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.