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Finding the Fourth Proportional to 52,674, 72,690.12 and 28,800.86

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Solution

The fourth proportional to 52,674, 72,690.12 and 28,800.86 is: 39,745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,674 : 72,690.12 = 28,800.86 : x
  2. Step 2: Convert to fraction form
    52,674/72,690.12 = 28,800.86/x
  3. Step 3: Cross multiply
    52,674x = 72,690.12 × 28,800.86
  4. Step 4: Simplify right side
    52,674x = 2,093,537,969.50
  5. Step 5: Solve for x
    x = 2,093,537,969.50/52,674
  6. Step 6: Final answer
    x = 39,745.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.