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Finding the Fourth Proportional to 51,063.88, 70,467.78 and 28,707.88

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Solution

The fourth proportional to 51,063.88, 70,467.78 and 28,707.88 is: 39,616.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,063.88 : 70,467.78 = 28,707.88 : x
  2. Step 2: Convert to fraction form
    51,063.88/70,467.78 = 28,707.88/x
  3. Step 3: Cross multiply
    51,063.88x = 70,467.78 × 28,707.88
  4. Step 4: Simplify right side
    51,063.88x = 2,022,980,572.11
  5. Step 5: Solve for x
    x = 2,022,980,572.11/51,063.88
  6. Step 6: Final answer
    x = 39,616.66

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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.