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Finding the Fourth Proportional to 56,866.98, 85,281.99 and 18,906.03

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Solution

The fourth proportional to 56,866.98, 85,281.99 and 18,906.03 is: 28,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,866.98 : 85,281.99 = 18,906.03 : x
  2. Step 2: Convert to fraction form
    56,866.98/85,281.99 = 18,906.03/x
  3. Step 3: Cross multiply
    56,866.98x = 85,281.99 × 18,906.03
  4. Step 4: Simplify right side
    56,866.98x = 1,612,343,861.40
  5. Step 5: Solve for x
    x = 1,612,343,861.40/56,866.98
  6. Step 6: Final answer
    x = 28,352.90

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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.