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Finding the Fourth Proportional to 89,778.56, 123,905.28 and 52,054.40

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Solution

The fourth proportional to 89,778.56, 123,905.28 and 52,054.40 is: 71,841.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,778.56 : 123,905.28 = 52,054.40 : x
  2. Step 2: Convert to fraction form
    89,778.56/123,905.28 = 52,054.40/x
  3. Step 3: Cross multiply
    89,778.56x = 123,905.28 × 52,054.40
  4. Step 4: Simplify right side
    89,778.56x = 6,449,815,007.23
  5. Step 5: Solve for x
    x = 6,449,815,007.23/89,778.56
  6. Step 6: Final answer
    x = 71,841.37

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1.5x scale

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.