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Finding the Fourth Proportional to 72,475.66, 100,022.52 and 40,650.58

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Solution

The fourth proportional to 72,475.66, 100,022.52 and 40,650.58 is: 56,101.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,475.66 : 100,022.52 = 40,650.58 : x
  2. Step 2: Convert to fraction form
    72,475.66/100,022.52 = 40,650.58/x
  3. Step 3: Cross multiply
    72,475.66x = 100,022.52 × 40,650.58
  4. Step 4: Simplify right side
    72,475.66x = 4,065,973,451.06
  5. Step 5: Solve for x
    x = 4,065,973,451.06/72,475.66
  6. Step 6: Final answer
    x = 56,101.23

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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.