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Finding the Fourth Proportional to 40,607.05, 60,917.14 and 12,520.53

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Solution

The fourth proportional to 40,607.05, 60,917.14 and 12,520.53 is: 18,782.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,607.05 : 60,917.14 = 12,520.53 : x
  2. Step 2: Convert to fraction form
    40,607.05/60,917.14 = 12,520.53/x
  3. Step 3: Cross multiply
    40,607.05x = 60,917.14 × 12,520.53
  4. Step 4: Simplify right side
    40,607.05x = 762,714,878.88
  5. Step 5: Solve for x
    x = 762,714,878.88/40,607.05
  6. Step 6: Final answer
    x = 18,782.82

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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.