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Finding the Fourth Proportional to 68,687.56, 94,835.12 and 42,885.44

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Solution

The fourth proportional to 68,687.56, 94,835.12 and 42,885.44 is: 59,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,687.56 : 94,835.12 = 42,885.44 : x
  2. Step 2: Convert to fraction form
    68,687.56/94,835.12 = 42,885.44/x
  3. Step 3: Cross multiply
    68,687.56x = 94,835.12 × 42,885.44
  4. Step 4: Simplify right side
    68,687.56x = 4,067,045,848.65
  5. Step 5: Solve for x
    x = 4,067,045,848.65/68,687.56
  6. Step 6: Final answer
    x = 59,210.81

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1.5x scale

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.