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Finding the Fourth Proportional to 40,768, 56,121.60 and 36,574.72

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Solution

The fourth proportional to 40,768, 56,121.60 and 36,574.72 is: 50,349.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,768 : 56,121.60 = 36,574.72 : x
  2. Step 2: Convert to fraction form
    40,768/56,121.60 = 36,574.72/x
  3. Step 3: Cross multiply
    40,768x = 56,121.60 × 36,574.72
  4. Step 4: Simplify right side
    40,768x = 2,052,631,805.95
  5. Step 5: Solve for x
    x = 2,052,631,805.95/40,768
  6. Step 6: Final answer
    x = 50,349.09

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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.