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Finding the Fourth Proportional to 68,104.89, 102,125.79 and 37,689.57

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Solution

The fourth proportional to 68,104.89, 102,125.79 and 37,689.57 is: 56,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,104.89 : 102,125.79 = 37,689.57 : x
  2. Step 2: Convert to fraction form
    68,104.89/102,125.79 = 37,689.57/x
  3. Step 3: Cross multiply
    68,104.89x = 102,125.79 × 37,689.57
  4. Step 4: Simplify right side
    68,104.89x = 3,849,077,111.01
  5. Step 5: Solve for x
    x = 3,849,077,111.01/68,104.89
  6. Step 6: Final answer
    x = 56,516.90

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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.