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Finding the Fourth Proportional to 72,523.10, 100,081.59 and 40,692.11

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Solution

The fourth proportional to 72,523.10, 100,081.59 and 40,692.11 is: 56,154.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,523.10 : 100,081.59 = 40,692.11 : x
  2. Step 2: Convert to fraction form
    72,523.10/100,081.59 = 40,692.11/x
  3. Step 3: Cross multiply
    72,523.10x = 100,081.59 × 40,692.11
  4. Step 4: Simplify right side
    72,523.10x = 4,072,531,069.25
  5. Step 5: Solve for x
    x = 4,072,531,069.25/72,523.10
  6. Step 6: Final answer
    x = 56,154.95

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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.