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Finding the Fourth Proportional to 52,880.00, 79,284.50 and 20,829.76

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Solution

The fourth proportional to 52,880.00, 79,284.50 and 20,829.76 is: 31,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,880.00 : 79,284.50 = 20,829.76 : x
  2. Step 2: Convert to fraction form
    52,880.00/79,284.50 = 20,829.76/x
  3. Step 3: Cross multiply
    52,880.00x = 79,284.50 × 20,829.76
  4. Step 4: Simplify right side
    52,880.00x = 1,651,477,179.79
  5. Step 5: Solve for x
    x = 1,651,477,179.79/52,880.00
  6. Step 6: Final answer
    x = 31,230.66

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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.