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Finding the Fourth Proportional to 56,353.35, 84,541.29 and 20,814.87

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Solution

The fourth proportional to 56,353.35, 84,541.29 and 20,814.87 is: 31,226.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,353.35 : 84,541.29 = 20,814.87 : x
  2. Step 2: Convert to fraction form
    56,353.35/84,541.29 = 20,814.87/x
  3. Step 3: Cross multiply
    56,353.35x = 84,541.29 × 20,814.87
  4. Step 4: Simplify right side
    56,353.35x = 1,759,715,960.98
  5. Step 5: Solve for x
    x = 1,759,715,960.98/56,353.35
  6. Step 6: Final answer
    x = 31,226.47

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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.