Home / 45,258.33-67,890.83-11,978.17

Finding the Fourth Proportional to 45,258.33, 67,890.83 and 11,978.17

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Solution

The fourth proportional to 45,258.33, 67,890.83 and 11,978.17 is: 17,968.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,258.33 : 67,890.83 = 11,978.17 : x
  2. Step 2: Convert to fraction form
    45,258.33/67,890.83 = 11,978.17/x
  3. Step 3: Cross multiply
    45,258.33x = 67,890.83 × 11,978.17
  4. Step 4: Simplify right side
    45,258.33x = 813,207,673.56
  5. Step 5: Solve for x
    x = 813,207,673.56/45,258.33
  6. Step 6: Final answer
    x = 17,968.13

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1.5x scale

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.