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Finding the Fourth Proportional to 56,382.92, 84,607.67 and 20,869.18

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Solution

The fourth proportional to 56,382.92, 84,607.67 and 20,869.18 is: 31,316.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,382.92 : 84,607.67 = 20,869.18 : x
  2. Step 2: Convert to fraction form
    56,382.92/84,607.67 = 20,869.18/x
  3. Step 3: Cross multiply
    56,382.92x = 84,607.67 × 20,869.18
  4. Step 4: Simplify right side
    56,382.92x = 1,765,692,535.26
  5. Step 5: Solve for x
    x = 1,765,692,535.26/56,382.92
  6. Step 6: Final answer
    x = 31,316.09

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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.