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Finding the Fourth Proportional to 56,863.61, 85,314.29 and 17,421.11

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Solution

The fourth proportional to 56,863.61, 85,314.29 and 17,421.11 is: 26,137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,863.61 : 85,314.29 = 17,421.11 : x
  2. Step 2: Convert to fraction form
    56,863.61/85,314.29 = 17,421.11/x
  3. Step 3: Cross multiply
    56,863.61x = 85,314.29 × 17,421.11
  4. Step 4: Simplify right side
    56,863.61x = 1,486,269,630.66
  5. Step 5: Solve for x
    x = 1,486,269,630.66/56,863.61
  6. Step 6: Final answer
    x = 26,137.45

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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.