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Finding the Fourth Proportional to 40,696.80, 61,026.12 and 15,748.62

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Solution

The fourth proportional to 40,696.80, 61,026.12 and 15,748.62 is: 23,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,696.80 : 61,026.12 = 15,748.62 : x
  2. Step 2: Convert to fraction form
    40,696.80/61,026.12 = 15,748.62/x
  3. Step 3: Cross multiply
    40,696.80x = 61,026.12 × 15,748.62
  4. Step 4: Simplify right side
    40,696.80x = 961,077,173.95
  5. Step 5: Solve for x
    x = 961,077,173.95/40,696.80
  6. Step 6: Final answer
    x = 23,615.55

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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.