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Finding the Fourth Proportional to 67,730.48, 93,471.44 and 40,872.54

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Solution

The fourth proportional to 67,730.48, 93,471.44 and 40,872.54 is: 56,406.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,730.48 : 93,471.44 = 40,872.54 : x
  2. Step 2: Convert to fraction form
    67,730.48/93,471.44 = 40,872.54/x
  3. Step 3: Cross multiply
    67,730.48x = 93,471.44 × 40,872.54
  4. Step 4: Simplify right side
    67,730.48x = 3,820,415,170.26
  5. Step 5: Solve for x
    x = 3,820,415,170.26/67,730.48
  6. Step 6: Final answer
    x = 56,406.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.