Home / 91,965.78-126,927.80-76,627.98

Finding the Fourth Proportional to 91,965.78, 126,927.80 and 76,627.98

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Solution

The fourth proportional to 91,965.78, 126,927.80 and 76,627.98 is: 105,759.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,965.78 : 126,927.80 = 76,627.98 : x
  2. Step 2: Convert to fraction form
    91,965.78/126,927.80 = 76,627.98/x
  3. Step 3: Cross multiply
    91,965.78x = 126,927.80 × 76,627.98
  4. Step 4: Simplify right side
    91,965.78x = 9,726,220,919.84
  5. Step 5: Solve for x
    x = 9,726,220,919.84/91,965.78
  6. Step 6: Final answer
    x = 105,759.13

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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.