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Finding the Fourth Proportional to 40,706.40, 61,030.80 and 15,736.80

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Solution

The fourth proportional to 40,706.40, 61,030.80 and 15,736.80 is: 23,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,706.40 : 61,030.80 = 15,736.80 : x
  2. Step 2: Convert to fraction form
    40,706.40/61,030.80 = 15,736.80/x
  3. Step 3: Cross multiply
    40,706.40x = 61,030.80 × 15,736.80
  4. Step 4: Simplify right side
    40,706.40x = 960,429,493.44
  5. Step 5: Solve for x
    x = 960,429,493.44/40,706.40
  6. Step 6: Final answer
    x = 23,594.07

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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.