Home / 66,481.41-91,778.21-51,340.08

Finding the Fourth Proportional to 66,481.41, 91,778.21 and 51,340.08

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Solution

The fourth proportional to 66,481.41, 91,778.21 and 51,340.08 is: 70,875.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,481.41 : 91,778.21 = 51,340.08 : x
  2. Step 2: Convert to fraction form
    66,481.41/91,778.21 = 51,340.08/x
  3. Step 3: Cross multiply
    66,481.41x = 91,778.21 × 51,340.08
  4. Step 4: Simplify right side
    66,481.41x = 4,711,900,643.66
  5. Step 5: Solve for x
    x = 4,711,900,643.66/66,481.41
  6. Step 6: Final answer
    x = 70,875.46

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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.