Home / 68,074.24-102,111.40-21,330.76

Finding the Fourth Proportional to 68,074.24, 102,111.40 and 21,330.76

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Solution

The fourth proportional to 68,074.24, 102,111.40 and 21,330.76 is: 31,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,074.24 : 102,111.40 = 21,330.76 : x
  2. Step 2: Convert to fraction form
    68,074.24/102,111.40 = 21,330.76/x
  3. Step 3: Cross multiply
    68,074.24x = 102,111.40 × 21,330.76
  4. Step 4: Simplify right side
    68,074.24x = 2,178,113,766.66
  5. Step 5: Solve for x
    x = 2,178,113,766.66/68,074.24
  6. Step 6: Final answer
    x = 31,996.15

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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.