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Finding the Fourth Proportional to 56,025.12, 84,039.12 and 14,472

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Solution

The fourth proportional to 56,025.12, 84,039.12 and 14,472 is: 21,708.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,025.12 : 84,039.12 = 14,472 : x
  2. Step 2: Convert to fraction form
    56,025.12/84,039.12 = 14,472/x
  3. Step 3: Cross multiply
    56,025.12x = 84,039.12 × 14,472
  4. Step 4: Simplify right side
    56,025.12x = 1,216,214,144.64
  5. Step 5: Solve for x
    x = 1,216,214,144.64/56,025.12
  6. Step 6: Final answer
    x = 21,708.37

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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.