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Finding the Fourth Proportional to 52,503, 78,790.98 and 21,338.28

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Solution

The fourth proportional to 52,503, 78,790.98 and 21,338.28 is: 32,022.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,503 : 78,790.98 = 21,338.28 : x
  2. Step 2: Convert to fraction form
    52,503/78,790.98 = 21,338.28/x
  3. Step 3: Cross multiply
    52,503x = 78,790.98 × 21,338.28
  4. Step 4: Simplify right side
    52,503x = 1,681,263,992.71
  5. Step 5: Solve for x
    x = 1,681,263,992.71/52,503
  6. Step 6: Final answer
    x = 32,022.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.