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Finding the Fourth Proportional to 51,213.58, 70,675.02 and 28,554

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Solution

The fourth proportional to 51,213.58, 70,675.02 and 28,554 is: 39,404.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,213.58 : 70,675.02 = 28,554 : x
  2. Step 2: Convert to fraction form
    51,213.58/70,675.02 = 28,554/x
  3. Step 3: Cross multiply
    51,213.58x = 70,675.02 × 28,554
  4. Step 4: Simplify right side
    51,213.58x = 2,018,054,521.08
  5. Step 5: Solve for x
    x = 2,018,054,521.08/51,213.58
  6. Step 6: Final answer
    x = 39,404.68

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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.