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Finding the Fourth Proportional to 52,821.63, 79,232.81 and 13,378.86

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Solution

The fourth proportional to 52,821.63, 79,232.81 and 13,378.86 is: 20,068.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,821.63 : 79,232.81 = 13,378.86 : x
  2. Step 2: Convert to fraction form
    52,821.63/79,232.81 = 13,378.86/x
  3. Step 3: Cross multiply
    52,821.63x = 79,232.81 × 13,378.86
  4. Step 4: Simplify right side
    52,821.63x = 1,060,044,605.50
  5. Step 5: Solve for x
    x = 1,060,044,605.50/52,821.63
  6. Step 6: Final answer
    x = 20,068.38

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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.