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Finding the Fourth Proportional to 51,126, 70,553.88 and 28,770.48

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Solution

The fourth proportional to 51,126, 70,553.88 and 28,770.48 is: 39,703.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,126 : 70,553.88 = 28,770.48 : x
  2. Step 2: Convert to fraction form
    51,126/70,553.88 = 28,770.48/x
  3. Step 3: Cross multiply
    51,126x = 70,553.88 × 28,770.48
  4. Step 4: Simplify right side
    51,126x = 2,029,868,993.46
  5. Step 5: Solve for x
    x = 2,029,868,993.46/51,126
  6. Step 6: Final answer
    x = 39,703.26

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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.