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Finding the Fourth Proportional to 40,507.88, 60,763.66 and 12,425.88

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Solution

The fourth proportional to 40,507.88, 60,763.66 and 12,425.88 is: 18,639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,507.88 : 60,763.66 = 12,425.88 : x
  2. Step 2: Convert to fraction form
    40,507.88/60,763.66 = 12,425.88/x
  3. Step 3: Cross multiply
    40,507.88x = 60,763.66 × 12,425.88
  4. Step 4: Simplify right side
    40,507.88x = 755,041,947.52
  5. Step 5: Solve for x
    x = 755,041,947.52/40,507.88
  6. Step 6: Final answer
    x = 18,639.38

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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.