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Finding the Fourth Proportional to 74,820, 112,229.85 and 43,633.38

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Solution

The fourth proportional to 74,820, 112,229.85 and 43,633.38 is: 65,449.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,820 : 112,229.85 = 43,633.38 : x
  2. Step 2: Convert to fraction form
    74,820/112,229.85 = 43,633.38/x
  3. Step 3: Cross multiply
    74,820x = 112,229.85 × 43,633.38
  4. Step 4: Simplify right side
    74,820x = 4,896,967,692.39
  5. Step 5: Solve for x
    x = 4,896,967,692.39/74,820
  6. Step 6: Final answer
    x = 65,449.98

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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.