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Finding the Fourth Proportional to 56,304.96, 84,480 and 21,254.56

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Solution

The fourth proportional to 56,304.96, 84,480 and 21,254.56 is: 31,890.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,304.96 : 84,480 = 21,254.56 : x
  2. Step 2: Convert to fraction form
    56,304.96/84,480 = 21,254.56/x
  3. Step 3: Cross multiply
    56,304.96x = 84,480 × 21,254.56
  4. Step 4: Simplify right side
    56,304.96x = 1,795,585,228.80
  5. Step 5: Solve for x
    x = 1,795,585,228.80/56,304.96
  6. Step 6: Final answer
    x = 31,890.36

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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.