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Finding the Fourth Proportional to 56,965, 85,444.92 and 17,520.40

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Solution

The fourth proportional to 56,965, 85,444.92 and 17,520.40 is: 26,279.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,965 : 85,444.92 = 17,520.40 : x
  2. Step 2: Convert to fraction form
    56,965/85,444.92 = 17,520.40/x
  3. Step 3: Cross multiply
    56,965x = 85,444.92 × 17,520.40
  4. Step 4: Simplify right side
    56,965x = 1,497,029,176.37
  5. Step 5: Solve for x
    x = 1,497,029,176.37/56,965
  6. Step 6: Final answer
    x = 26,279.81

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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.