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Finding the Fourth Proportional to 40,672.80, 61,003.40 and 15,724.58

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Solution

The fourth proportional to 40,672.80, 61,003.40 and 15,724.58 is: 23,584.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,672.80 : 61,003.40 = 15,724.58 : x
  2. Step 2: Convert to fraction form
    40,672.80/61,003.40 = 15,724.58/x
  3. Step 3: Cross multiply
    40,672.80x = 61,003.40 × 15,724.58
  4. Step 4: Simplify right side
    40,672.80x = 959,252,459.93
  5. Step 5: Solve for x
    x = 959,252,459.93/40,672.80
  6. Step 6: Final answer
    x = 23,584.62

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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.