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Finding the Fourth Proportional to 56,371.76, 84,559.05 and 18,933.15

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Solution

The fourth proportional to 56,371.76, 84,559.05 and 18,933.15 is: 28,400.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,371.76 : 84,559.05 = 18,933.15 : x
  2. Step 2: Convert to fraction form
    56,371.76/84,559.05 = 18,933.15/x
  3. Step 3: Cross multiply
    56,371.76x = 84,559.05 × 18,933.15
  4. Step 4: Simplify right side
    56,371.76x = 1,600,969,177.51
  5. Step 5: Solve for x
    x = 1,600,969,177.51/56,371.76
  6. Step 6: Final answer
    x = 28,400.20

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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.