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Finding the Fourth Proportional to 52,660, 79,002.96 and 15,724

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Solution

The fourth proportional to 52,660, 79,002.96 and 15,724 is: 23,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,660 : 79,002.96 = 15,724 : x
  2. Step 2: Convert to fraction form
    52,660/79,002.96 = 15,724/x
  3. Step 3: Cross multiply
    52,660x = 79,002.96 × 15,724
  4. Step 4: Simplify right side
    52,660x = 1,242,242,543.04
  5. Step 5: Solve for x
    x = 1,242,242,543.04/52,660
  6. Step 6: Final answer
    x = 23,589.87

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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.