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Finding the Fourth Proportional to 68,437.77, 102,659.57 and 21,689.61

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Solution

The fourth proportional to 68,437.77, 102,659.57 and 21,689.61 is: 32,535.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,437.77 : 102,659.57 = 21,689.61 : x
  2. Step 2: Convert to fraction form
    68,437.77/102,659.57 = 21,689.61/x
  3. Step 3: Cross multiply
    68,437.77x = 102,659.57 × 21,689.61
  4. Step 4: Simplify right side
    68,437.77x = 2,226,645,927.62
  5. Step 5: Solve for x
    x = 2,226,645,927.62/68,437.77
  6. Step 6: Final answer
    x = 32,535.34

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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.