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Finding the Fourth Proportional to 54,630.40, 81,859.20 and 40,633.60

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Solution

The fourth proportional to 54,630.40, 81,859.20 and 40,633.60 is: 60,886.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,630.40 : 81,859.20 = 40,633.60 : x
  2. Step 2: Convert to fraction form
    54,630.40/81,859.20 = 40,633.60/x
  3. Step 3: Cross multiply
    54,630.40x = 81,859.20 × 40,633.60
  4. Step 4: Simplify right side
    54,630.40x = 3,326,233,989.12
  5. Step 5: Solve for x
    x = 3,326,233,989.12/54,630.40
  6. Step 6: Final answer
    x = 60,886.14

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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.