Home / 81,270.46-121,794.97-39,147.48

Finding the Fourth Proportional to 81,270.46, 121,794.97 and 39,147.48

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Solution

The fourth proportional to 81,270.46, 121,794.97 and 39,147.48 is: 58,667.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.46 : 121,794.97 = 39,147.48 : x
  2. Step 2: Convert to fraction form
    81,270.46/121,794.97 = 39,147.48/x
  3. Step 3: Cross multiply
    81,270.46x = 121,794.97 × 39,147.48
  4. Step 4: Simplify right side
    81,270.46x = 4,767,966,152.18
  5. Step 5: Solve for x
    x = 4,767,966,152.18/81,270.46
  6. Step 6: Final answer
    x = 58,667.89

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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.