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Finding the Fourth Proportional to 52,807.75, 72,876.51 and 28,934.42

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Solution

The fourth proportional to 52,807.75, 72,876.51 and 28,934.42 is: 39,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,807.75 : 72,876.51 = 28,934.42 : x
  2. Step 2: Convert to fraction form
    52,807.75/72,876.51 = 28,934.42/x
  3. Step 3: Cross multiply
    52,807.75x = 72,876.51 × 28,934.42
  4. Step 4: Simplify right side
    52,807.75x = 2,108,639,184.09
  5. Step 5: Solve for x
    x = 2,108,639,184.09/52,807.75
  6. Step 6: Final answer
    x = 39,930.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.