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Finding the Fourth Proportional to 52,720.80, 79,068.72 and 15,270.96

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Solution

The fourth proportional to 52,720.80, 79,068.72 and 15,270.96 is: 22,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,720.80 : 79,068.72 = 15,270.96 : x
  2. Step 2: Convert to fraction form
    52,720.80/79,068.72 = 15,270.96/x
  3. Step 3: Cross multiply
    52,720.80x = 79,068.72 × 15,270.96
  4. Step 4: Simplify right side
    52,720.80x = 1,207,455,260.37
  5. Step 5: Solve for x
    x = 1,207,455,260.37/52,720.80
  6. Step 6: Final answer
    x = 22,902.83

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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.