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Finding the Fourth Proportional to 40,838.80, 61,229.23 and 15,857.80

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Solution

The fourth proportional to 40,838.80, 61,229.23 and 15,857.80 is: 23,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,838.80 : 61,229.23 = 15,857.80 : x
  2. Step 2: Convert to fraction form
    40,838.80/61,229.23 = 15,857.80/x
  3. Step 3: Cross multiply
    40,838.80x = 61,229.23 × 15,857.80
  4. Step 4: Simplify right side
    40,838.80x = 970,960,883.49
  5. Step 5: Solve for x
    x = 970,960,883.49/40,838.80
  6. Step 6: Final answer
    x = 23,775.45

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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.