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Finding the Fourth Proportional to 40,728.48, 56,070 and 36,529.44

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Solution

The fourth proportional to 40,728.48, 56,070 and 36,529.44 is: 50,289.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.48 : 56,070 = 36,529.44 : x
  2. Step 2: Convert to fraction form
    40,728.48/56,070 = 36,529.44/x
  3. Step 3: Cross multiply
    40,728.48x = 56,070 × 36,529.44
  4. Step 4: Simplify right side
    40,728.48x = 2,048,205,700.80
  5. Step 5: Solve for x
    x = 2,048,205,700.80/40,728.48
  6. Step 6: Final answer
    x = 50,289.27

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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.