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Finding the Fourth Proportional to 52,872.88, 72,964.62 and 28,999.72

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Solution

The fourth proportional to 52,872.88, 72,964.62 and 28,999.72 is: 40,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,872.88 : 72,964.62 = 28,999.72 : x
  2. Step 2: Convert to fraction form
    52,872.88/72,964.62 = 28,999.72/x
  3. Step 3: Cross multiply
    52,872.88x = 72,964.62 × 28,999.72
  4. Step 4: Simplify right side
    52,872.88x = 2,115,953,549.91
  5. Step 5: Solve for x
    x = 2,115,953,549.91/52,872.88
  6. Step 6: Final answer
    x = 40,019.64

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1.5x scale

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.