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Finding the Fourth Proportional to 66,998.56, 100,498.80 and 31,941.92

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Solution

The fourth proportional to 66,998.56, 100,498.80 and 31,941.92 is: 47,913.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,998.56 : 100,498.80 = 31,941.92 : x
  2. Step 2: Convert to fraction form
    66,998.56/100,498.80 = 31,941.92/x
  3. Step 3: Cross multiply
    66,998.56x = 100,498.80 × 31,941.92
  4. Step 4: Simplify right side
    66,998.56x = 3,210,124,629.70
  5. Step 5: Solve for x
    x = 3,210,124,629.70/66,998.56
  6. Step 6: Final answer
    x = 47,913.34

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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.