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Finding the Fourth Proportional to 52,872.88, 72,962.04 and 28,995.12

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Solution

The fourth proportional to 52,872.88, 72,962.04 and 28,995.12 is: 40,011.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,872.88 : 72,962.04 = 28,995.12 : x
  2. Step 2: Convert to fraction form
    52,872.88/72,962.04 = 28,995.12/x
  3. Step 3: Cross multiply
    52,872.88x = 72,962.04 × 28,995.12
  4. Step 4: Simplify right side
    52,872.88x = 2,115,543,105.24
  5. Step 5: Solve for x
    x = 2,115,543,105.24/52,872.88
  6. Step 6: Final answer
    x = 40,011.88

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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.