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Finding the Fourth Proportional to 52,659, 79,019.67 and 19,402.48

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Solution

The fourth proportional to 52,659, 79,019.67 and 19,402.48 is: 29,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,659 : 79,019.67 = 19,402.48 : x
  2. Step 2: Convert to fraction form
    52,659/79,019.67 = 19,402.48/x
  3. Step 3: Cross multiply
    52,659x = 79,019.67 × 19,402.48
  4. Step 4: Simplify right side
    52,659x = 1,533,177,566.78
  5. Step 5: Solve for x
    x = 1,533,177,566.78/52,659
  6. Step 6: Final answer
    x = 29,115.20

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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.