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Finding the Fourth Proportional to 40,382.79, 60,583.95 and 12,680.79

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Solution

The fourth proportional to 40,382.79, 60,583.95 and 12,680.79 is: 19,024.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,382.79 : 60,583.95 = 12,680.79 : x
  2. Step 2: Convert to fraction form
    40,382.79/60,583.95 = 12,680.79/x
  3. Step 3: Cross multiply
    40,382.79x = 60,583.95 × 12,680.79
  4. Step 4: Simplify right side
    40,382.79x = 768,252,347.32
  5. Step 5: Solve for x
    x = 768,252,347.32/40,382.79
  6. Step 6: Final answer
    x = 19,024.25

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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.