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Finding the Fourth Proportional to 40,043.64, 60,068.64 and 11,961.63

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Solution

The fourth proportional to 40,043.64, 60,068.64 and 11,961.63 is: 17,943.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,043.64 : 60,068.64 = 11,961.63 : x
  2. Step 2: Convert to fraction form
    40,043.64/60,068.64 = 11,961.63/x
  3. Step 3: Cross multiply
    40,043.64x = 60,068.64 × 11,961.63
  4. Step 4: Simplify right side
    40,043.64x = 718,518,846.28
  5. Step 5: Solve for x
    x = 718,518,846.28/40,043.64
  6. Step 6: Final answer
    x = 17,943.39

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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.