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Finding the Fourth Proportional to 69,829.39, 96,366.74 and 39,615.99

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Solution

The fourth proportional to 69,829.39, 96,366.74 and 39,615.99 is: 54,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,829.39 : 96,366.74 = 39,615.99 : x
  2. Step 2: Convert to fraction form
    69,829.39/96,366.74 = 39,615.99/x
  3. Step 3: Cross multiply
    69,829.39x = 96,366.74 × 39,615.99
  4. Step 4: Simplify right side
    69,829.39x = 3,817,663,360.14
  5. Step 5: Solve for x
    x = 3,817,663,360.14/69,829.39
  6. Step 6: Final answer
    x = 54,671.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.