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Finding the Fourth Proportional to 56,053.62, 84,078 and 13,932.81

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Solution

The fourth proportional to 56,053.62, 84,078 and 13,932.81 is: 20,898.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,053.62 : 84,078 = 13,932.81 : x
  2. Step 2: Convert to fraction form
    56,053.62/84,078 = 13,932.81/x
  3. Step 3: Cross multiply
    56,053.62x = 84,078 × 13,932.81
  4. Step 4: Simplify right side
    56,053.62x = 1,171,442,799.18
  5. Step 5: Solve for x
    x = 1,171,442,799.18/56,053.62
  6. Step 6: Final answer
    x = 20,898.61

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1.5x scale

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.