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Finding the Fourth Proportional to 40,471.64, 60,713.58 and 12,385.16

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Solution

The fourth proportional to 40,471.64, 60,713.58 and 12,385.16 is: 18,579.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,471.64 : 60,713.58 = 12,385.16 : x
  2. Step 2: Convert to fraction form
    40,471.64/60,713.58 = 12,385.16/x
  3. Step 3: Cross multiply
    40,471.64x = 60,713.58 × 12,385.16
  4. Step 4: Simplify right side
    40,471.64x = 751,947,402.47
  5. Step 5: Solve for x
    x = 751,947,402.47/40,471.64
  6. Step 6: Final answer
    x = 18,579.61

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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.