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Finding the Fourth Proportional to 69,689.40, 104,534.10 and 68,537.40

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Solution

The fourth proportional to 69,689.40, 104,534.10 and 68,537.40 is: 102,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,689.40 : 104,534.10 = 68,537.40 : x
  2. Step 2: Convert to fraction form
    69,689.40/104,534.10 = 68,537.40/x
  3. Step 3: Cross multiply
    69,689.40x = 104,534.10 × 68,537.40
  4. Step 4: Simplify right side
    69,689.40x = 7,164,495,425.34
  5. Step 5: Solve for x
    x = 7,164,495,425.34/69,689.40
  6. Step 6: Final answer
    x = 102,806.10

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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.