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Finding the Fourth Proportional to 72,148.80, 99,596 and 43,863.52

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Solution

The fourth proportional to 72,148.80, 99,596 and 43,863.52 is: 60,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.80 : 99,596 = 43,863.52 : x
  2. Step 2: Convert to fraction form
    72,148.80/99,596 = 43,863.52/x
  3. Step 3: Cross multiply
    72,148.80x = 99,596 × 43,863.52
  4. Step 4: Simplify right side
    72,148.80x = 4,368,631,137.92
  5. Step 5: Solve for x
    x = 4,368,631,137.92/72,148.80
  6. Step 6: Final answer
    x = 60,550.30

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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.