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Finding the Fourth Proportional to 40,680, 56,131.71 and 25,561.95

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Solution

The fourth proportional to 40,680, 56,131.71 and 25,561.95 is: 35,271.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,680 : 56,131.71 = 25,561.95 : x
  2. Step 2: Convert to fraction form
    40,680/56,131.71 = 25,561.95/x
  3. Step 3: Cross multiply
    40,680x = 56,131.71 × 25,561.95
  4. Step 4: Simplify right side
    40,680x = 1,434,835,964.43
  5. Step 5: Solve for x
    x = 1,434,835,964.43/40,680
  6. Step 6: Final answer
    x = 35,271.29

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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.