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Finding the Fourth Proportional to 68,235.50, 102,339.13 and 18,303.72

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Solution

The fourth proportional to 68,235.50, 102,339.13 and 18,303.72 is: 27,451.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,235.50 : 102,339.13 = 18,303.72 : x
  2. Step 2: Convert to fraction form
    68,235.50/102,339.13 = 18,303.72/x
  3. Step 3: Cross multiply
    68,235.50x = 102,339.13 × 18,303.72
  4. Step 4: Simplify right side
    68,235.50x = 1,873,186,689.05
  5. Step 5: Solve for x
    x = 1,873,186,689.05/68,235.50
  6. Step 6: Final answer
    x = 27,451.79

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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.