Home / 81,116.75-121,588.97-47,852.48

Finding the Fourth Proportional to 81,116.75, 121,588.97 and 47,852.48

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Solution

The fourth proportional to 81,116.75, 121,588.97 and 47,852.48 is: 71,727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,116.75 : 121,588.97 = 47,852.48 : x
  2. Step 2: Convert to fraction form
    81,116.75/121,588.97 = 47,852.48/x
  3. Step 3: Cross multiply
    81,116.75x = 121,588.97 × 47,852.48
  4. Step 4: Simplify right side
    81,116.75x = 5,818,333,819.86
  5. Step 5: Solve for x
    x = 5,818,333,819.86/81,116.75
  6. Step 6: Final answer
    x = 71,727.89

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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.