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Finding the Fourth Proportional to 40,487.56, 60,741 and 12,785.56

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Solution

The fourth proportional to 40,487.56, 60,741 and 12,785.56 is: 19,181.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,487.56 : 60,741 = 12,785.56 : x
  2. Step 2: Convert to fraction form
    40,487.56/60,741 = 12,785.56/x
  3. Step 3: Cross multiply
    40,487.56x = 60,741 × 12,785.56
  4. Step 4: Simplify right side
    40,487.56x = 776,607,699.96
  5. Step 5: Solve for x
    x = 776,607,699.96/40,487.56
  6. Step 6: Final answer
    x = 19,181.39

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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.