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Finding the Fourth Proportional to 69,636.97, 96,101.31 and 39,421.66

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Solution

The fourth proportional to 69,636.97, 96,101.31 and 39,421.66 is: 54,403.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,636.97 : 96,101.31 = 39,421.66 : x
  2. Step 2: Convert to fraction form
    69,636.97/96,101.31 = 39,421.66/x
  3. Step 3: Cross multiply
    69,636.97x = 96,101.31 × 39,421.66
  4. Step 4: Simplify right side
    69,636.97x = 3,788,473,415.55
  5. Step 5: Solve for x
    x = 3,788,473,415.55/69,636.97
  6. Step 6: Final answer
    x = 54,403.19

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1.5x scale

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.