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Finding the Fourth Proportional to 51,001, 70,387.98 and 28,645

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Solution

The fourth proportional to 51,001, 70,387.98 and 28,645 is: 39,533.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,001 : 70,387.98 = 28,645 : x
  2. Step 2: Convert to fraction form
    51,001/70,387.98 = 28,645/x
  3. Step 3: Cross multiply
    51,001x = 70,387.98 × 28,645
  4. Step 4: Simplify right side
    51,001x = 2,016,263,687.10
  5. Step 5: Solve for x
    x = 2,016,263,687.10/51,001
  6. Step 6: Final answer
    x = 39,533.81

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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.