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Finding the Fourth Proportional to 51,211.58, 70,672.26 and 28,552

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Solution

The fourth proportional to 51,211.58, 70,672.26 and 28,552 is: 39,401.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,211.58 : 70,672.26 = 28,552 : x
  2. Step 2: Convert to fraction form
    51,211.58/70,672.26 = 28,552/x
  3. Step 3: Cross multiply
    51,211.58x = 70,672.26 × 28,552
  4. Step 4: Simplify right side
    51,211.58x = 2,017,834,367.52
  5. Step 5: Solve for x
    x = 2,017,834,367.52/51,211.58
  6. Step 6: Final answer
    x = 39,401.92

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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.