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Finding the Fourth Proportional to 56,826, 85,235.40 and 17,379.90

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Solution

The fourth proportional to 56,826, 85,235.40 and 17,379.90 is: 26,068.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,826 : 85,235.40 = 17,379.90 : x
  2. Step 2: Convert to fraction form
    56,826/85,235.40 = 17,379.90/x
  3. Step 3: Cross multiply
    56,826x = 85,235.40 × 17,379.90
  4. Step 4: Simplify right side
    56,826x = 1,481,382,728.46
  5. Step 5: Solve for x
    x = 1,481,382,728.46/56,826
  6. Step 6: Final answer
    x = 26,068.75

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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.