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Finding the Fourth Proportional to 52,880.79, 79,318.89 and 17,820.30

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Solution

The fourth proportional to 52,880.79, 79,318.89 and 17,820.30 is: 26,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,880.79 : 79,318.89 = 17,820.30 : x
  2. Step 2: Convert to fraction form
    52,880.79/79,318.89 = 17,820.30/x
  3. Step 3: Cross multiply
    52,880.79x = 79,318.89 × 17,820.30
  4. Step 4: Simplify right side
    52,880.79x = 1,413,486,415.47
  5. Step 5: Solve for x
    x = 1,413,486,415.47/52,880.79
  6. Step 6: Final answer
    x = 26,729.68

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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.