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Finding the Fourth Proportional to 40,355.73, 60,543.30 and 12,653.73

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Solution

The fourth proportional to 40,355.73, 60,543.30 and 12,653.73 is: 18,983.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,355.73 : 60,543.30 = 12,653.73 : x
  2. Step 2: Convert to fraction form
    40,355.73/60,543.30 = 12,653.73/x
  3. Step 3: Cross multiply
    40,355.73x = 60,543.30 × 12,653.73
  4. Step 4: Simplify right side
    40,355.73x = 766,098,571.51
  5. Step 5: Solve for x
    x = 766,098,571.51/40,355.73
  6. Step 6: Final answer
    x = 18,983.64

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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.