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Finding the Fourth Proportional to 68,012.88, 102,003.12 and 28,570.76

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Solution

The fourth proportional to 68,012.88, 102,003.12 and 28,570.76 is: 42,849.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,012.88 : 102,003.12 = 28,570.76 : x
  2. Step 2: Convert to fraction form
    68,012.88/102,003.12 = 28,570.76/x
  3. Step 3: Cross multiply
    68,012.88x = 102,003.12 × 28,570.76
  4. Step 4: Simplify right side
    68,012.88x = 2,914,306,660.77
  5. Step 5: Solve for x
    x = 2,914,306,660.77/68,012.88
  6. Step 6: Final answer
    x = 42,849.33

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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.