Home / 91,578.30-126,374.31-51,291.42

Finding the Fourth Proportional to 91,578.30, 126,374.31 and 51,291.42

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Solution

The fourth proportional to 91,578.30, 126,374.31 and 51,291.42 is: 70,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578.30 : 126,374.31 = 51,291.42 : x
  2. Step 2: Convert to fraction form
    91,578.30/126,374.31 = 51,291.42/x
  3. Step 3: Cross multiply
    91,578.30x = 126,374.31 × 51,291.42
  4. Step 4: Simplify right side
    91,578.30x = 6,481,917,811.42
  5. Step 5: Solve for x
    x = 6,481,917,811.42/91,578.30
  6. Step 6: Final answer
    x = 70,780.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.