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Finding the Fourth Proportional to 72,804.77, 100,453.96 and 40,962.05

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Solution

The fourth proportional to 72,804.77, 100,453.96 and 40,962.05 is: 56,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,804.77 : 100,453.96 = 40,962.05 : x
  2. Step 2: Convert to fraction form
    72,804.77/100,453.96 = 40,962.05/x
  3. Step 3: Cross multiply
    72,804.77x = 100,453.96 × 40,962.05
  4. Step 4: Simplify right side
    72,804.77x = 4,114,800,132.22
  5. Step 5: Solve for x
    x = 4,114,800,132.22/72,804.77
  6. Step 6: Final answer
    x = 56,518.28

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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.