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Finding the Fourth Proportional to 52,577, 78,853.71 and 15,128.73

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Solution

The fourth proportional to 52,577, 78,853.71 and 15,128.73 is: 22,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,577 : 78,853.71 = 15,128.73 : x
  2. Step 2: Convert to fraction form
    52,577/78,853.71 = 15,128.73/x
  3. Step 3: Cross multiply
    52,577x = 78,853.71 × 15,128.73
  4. Step 4: Simplify right side
    52,577x = 1,192,956,488.09
  5. Step 5: Solve for x
    x = 1,192,956,488.09/52,577
  6. Step 6: Final answer
    x = 22,689.70

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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.