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Finding the Fourth Proportional to 69,886.40, 104,829.60 and 65,731.10

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Solution

The fourth proportional to 69,886.40, 104,829.60 and 65,731.10 is: 98,596.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,886.40 : 104,829.60 = 65,731.10 : x
  2. Step 2: Convert to fraction form
    69,886.40/104,829.60 = 65,731.10/x
  3. Step 3: Cross multiply
    69,886.40x = 104,829.60 × 65,731.10
  4. Step 4: Simplify right side
    69,886.40x = 6,890,564,920.56
  5. Step 5: Solve for x
    x = 6,890,564,920.56/69,886.40
  6. Step 6: Final answer
    x = 98,596.65

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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.