Home / 76,760.70-115,248.66-39,347.61

Finding the Fourth Proportional to 76,760.70, 115,248.66 and 39,347.61

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Solution

The fourth proportional to 76,760.70, 115,248.66 and 39,347.61 is: 59,076.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,760.70 : 115,248.66 = 39,347.61 : x
  2. Step 2: Convert to fraction form
    76,760.70/115,248.66 = 39,347.61/x
  3. Step 3: Cross multiply
    76,760.70x = 115,248.66 × 39,347.61
  4. Step 4: Simplify right side
    76,760.70x = 4,534,759,326.70
  5. Step 5: Solve for x
    x = 4,534,759,326.70/76,760.70
  6. Step 6: Final answer
    x = 59,076.58

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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.