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Finding the Fourth Proportional to 40,682.56, 61,012.56 and 19,636.30

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Solution

The fourth proportional to 40,682.56, 61,012.56 and 19,636.30 is: 29,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,682.56 : 61,012.56 = 19,636.30 : x
  2. Step 2: Convert to fraction form
    40,682.56/61,012.56 = 19,636.30/x
  3. Step 3: Cross multiply
    40,682.56x = 61,012.56 × 19,636.30
  4. Step 4: Simplify right side
    40,682.56x = 1,198,060,931.93
  5. Step 5: Solve for x
    x = 1,198,060,931.93/40,682.56
  6. Step 6: Final answer
    x = 29,449.01

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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.