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Finding the Fourth Proportional to 52,865.07, 72,957.12 and 28,991.75

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Solution

The fourth proportional to 52,865.07, 72,957.12 and 28,991.75 is: 40,010.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,865.07 : 72,957.12 = 28,991.75 : x
  2. Step 2: Convert to fraction form
    52,865.07/72,957.12 = 28,991.75/x
  3. Step 3: Cross multiply
    52,865.07x = 72,957.12 × 28,991.75
  4. Step 4: Simplify right side
    52,865.07x = 2,115,154,438.80
  5. Step 5: Solve for x
    x = 2,115,154,438.80/52,865.07
  6. Step 6: Final answer
    x = 40,010.44

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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.