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Finding the Fourth Proportional to 35,415.88, 48,862.94 and 20,099.96

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Solution

The fourth proportional to 35,415.88, 48,862.94 and 20,099.96 is: 27,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,415.88 : 48,862.94 = 20,099.96 : x
  2. Step 2: Convert to fraction form
    35,415.88/48,862.94 = 20,099.96/x
  3. Step 3: Cross multiply
    35,415.88x = 48,862.94 × 20,099.96
  4. Step 4: Simplify right side
    35,415.88x = 982,143,311.89
  5. Step 5: Solve for x
    x = 982,143,311.89/35,415.88
  6. Step 6: Final answer
    x = 27,731.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.