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Finding the Fourth Proportional to 43,781.61, 65,660.45 and 15,696.45

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Solution

The fourth proportional to 43,781.61, 65,660.45 and 15,696.45 is: 23,540.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,781.61 : 65,660.45 = 15,696.45 : x
  2. Step 2: Convert to fraction form
    43,781.61/65,660.45 = 15,696.45/x
  3. Step 3: Cross multiply
    43,781.61x = 65,660.45 × 15,696.45
  4. Step 4: Simplify right side
    43,781.61x = 1,030,635,724.18
  5. Step 5: Solve for x
    x = 1,030,635,724.18/43,781.61
  6. Step 6: Final answer
    x = 23,540.38

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1.5x scale

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.