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Finding the Fourth Proportional to 56,839.99, 85,266.56 and 18,892.65

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Solution

The fourth proportional to 56,839.99, 85,266.56 and 18,892.65 is: 28,341.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,839.99 : 85,266.56 = 18,892.65 : x
  2. Step 2: Convert to fraction form
    56,839.99/85,266.56 = 18,892.65/x
  3. Step 3: Cross multiply
    56,839.99x = 85,266.56 × 18,892.65
  4. Step 4: Simplify right side
    56,839.99x = 1,610,911,108.85
  5. Step 5: Solve for x
    x = 1,610,911,108.85/56,839.99
  6. Step 6: Final answer
    x = 28,341.16

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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.