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Finding the Fourth Proportional to 43,278, 59,723.64 and 30,724.62

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Solution

The fourth proportional to 43,278, 59,723.64 and 30,724.62 is: 42,399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278 : 59,723.64 = 30,724.62 : x
  2. Step 2: Convert to fraction form
    43,278/59,723.64 = 30,724.62/x
  3. Step 3: Cross multiply
    43,278x = 59,723.64 × 30,724.62
  4. Step 4: Simplify right side
    43,278x = 1,834,986,144.02
  5. Step 5: Solve for x
    x = 1,834,986,144.02/43,278
  6. Step 6: Final answer
    x = 42,399.98

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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.