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Finding the Fourth Proportional to 71,863.74, 99,175.02 and 40,032.63

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Solution

The fourth proportional to 71,863.74, 99,175.02 and 40,032.63 is: 55,246.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,863.74 : 99,175.02 = 40,032.63 : x
  2. Step 2: Convert to fraction form
    71,863.74/99,175.02 = 40,032.63/x
  3. Step 3: Cross multiply
    71,863.74x = 99,175.02 × 40,032.63
  4. Step 4: Simplify right side
    71,863.74x = 3,970,236,880.90
  5. Step 5: Solve for x
    x = 3,970,236,880.90/71,863.74
  6. Step 6: Final answer
    x = 55,246.73

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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.